Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fd15e958857a53…

MALICIOUS

PDF

97.9 KB Created: 2021-08-08 04:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 55802128070f5129b352910c5ddb1901 SHA-1: 5ccbbf95be08abf2314bc2809f56b976336f4e0c SHA-256: 93fd15e958857a53bf60232fbb6dcb1309e07fb0f70a704c6d7a8fbbfea6fd5b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of embedded URIs, many of which point to compromised WordPress sites or raw IP addresses, indicating a likely phishing or malware distribution attempt. The document body is heavily obfuscated and unreadable, providing no direct clues to its intent beyond the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/21b9127d05ae0903aa125f29b3ef0e10/21308373725.pdf In PDF document text
    • http://comp-art.ru/userfiles/file/jufosusuvetorovag.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/88192293760.pdfPDF link annotation
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c89564f36bc---pitipegomezuvodidojixube.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098bc77d00aa---naretoretuzisezifobumeduw.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/94a43c6cf802113181b46f41ccd86833/435734588.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ecbbd5dae2---wuxexen.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/69240377093.pdfIn PDF document text
    • http://zamokugrofa.sk/admin/fckeditor/file/80211651260.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6cda50b88---raxugigatamapalobuz.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/bje37jgvchl5b9gevbmt05v88h/kizomobax.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943b686aa6c---6022431143.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160906b707d970---72466849232.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/fc537330e0f2d0f3c23b70bf6d587e2a/tufekuneboxexezo.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/87d33eba75f1264f29cbe5af3e77e509/girofudideziladanazefogu.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/92970771470.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607602f13d7c7---butagogemimixil.pdfIn PDF document text
    • https://kontiko.com/ktkweb3/images/upload/files/90917193070.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/b68515048bec99f5b6aa7c93c6cae9e2/53253463763.pdfIn PDF document text
    • http://insureatkk.com/ckfinder/userfiles/files/wiloperotinerudofepawuse.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df6d8ab1ce---xojasipezezenarilikimami.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/f38fe0ffd75d3e3c8672c7a98f8f9945/papupenukulusijalesase.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///fekipinebivagi.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cc7893381---juluxebamusejanipuwegopu.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16089e601af384---3428911686.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=exothermic+vs+endothermic+reactions+examplesPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD2 20068 bytes
SHA-256: 48d8f4aa65804120829e7c50ff7ee7ff8274575a06aa9ce8c81d1ddda890f666
font_01_sfnt_off0001313f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313F 16140 bytes
SHA-256: 78ecf8e6b815915fb8d90f682407fa5e2b9430ed59f7c36deee35c1cff9d9725
font_02_sfnt_off000146a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EBE 10928 bytes
SHA-256: 4ea843c8c38a88c2c3292a57fac6fda5815ed787c24d01eab234aef7e1619958

Open this report in the interactive analyzer, or submit your own file for analysis.