Malicious PDF — malware analysis report

Static analysis result for SHA-256 d932da5e38802012…

MALICIOUS

PDF

105.0 KB Created: 2021-07-03 08:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: e7c44f70e5e996e43aa74dfb0a58a2a4 SHA-1: 77652900fa3eeda5115c0629fd01d47dcb256259 SHA-256: d932da5e38802012ec894bc510ff48166514e21e2c63470356dc02be7a9e0421
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a strong intent to facilitate phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://nmglyxx.com/userfiles/file/59731651436.pdf In PDF document text
    • http://zovsh.com/Uploadfiles/files/wugerokaxixopiverol.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/addd9febb9a7fb6fd3767abb61437464/fadosadizijekizezavatosu.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/24123320311.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/83403655167.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1656af72e---repowujipokaxumusojow.pdfIn PDF document text
    • https://kaptenhoki.net/contents//files/61236101818.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608298f61df5e---8223154863.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a253f786cd---misifagifozivorumesilaje.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/c677fe70d6fbdda4132f93deab74683a/mekonilomuxad.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/52099136939.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/9fe4928699485e80db7653f2a5147a2b/14856517344.pdfIn PDF document text
    • https://airbays.com/userfiles/file/45073311429.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/cd7fb10d739d848e988245f067ff768a/90155659057.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5c2ea703d---24611304591.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/pekugozokonikezu.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caac022259---58892507075.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da36e3d0256---22441916028.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607d399f299db---9222707669.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/86605348819.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/jv2eth4n4ioq55324bsf86bcu6/43847183136.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/21966935327.pdfIn PDF document text
    • http://studiogiovannone.com/userfiles/files/76774304622.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073bc86b3b30---56519890047.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=lady+and+the+tramp+1995PDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13907 17384 bytes
SHA-256: 8cadd234fb7f4b75ac6d80dce4c16fa15ddeabda10c6d1598f3ac9da343a9976
font_01_sfnt_off000166c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ED8 10656 bytes
SHA-256: f544fc0c46cf4c991ace89dc076a8fd80f3018edbf13ba6edfa9773ec5f5891b

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