Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf62e8cc75ccc82…

MALICIOUS

PDF

75.8 KB Created: 2021-09-23 20:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1877e4902888c48297636affdf8e1399 SHA-1: 12fbc59fce56f59a1ed5101b1db1bea468e1a6bd SHA-256: ddf62e8cc75ccc82932a8f38d2617e32779e00c0db5d4b01f6193ed0f7728b27
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting or compromised CMS upload storage, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=a+minute%27s+silence+full+movie+online PDF link annotation
    • http://resumesfromabove.com/userfiles/file/xatika.pdfIn PDF document text
    • http://dailymaydemtien.com/userfiles/files/5312368284.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/katosepofu.pdfIn PDF document text
    • https://praktijk-fix.nl/userfiles/image/file/88038446658.pdfIn PDF document text
    • http://kronospan-mofa.hu/editor_up/wexujojafasedidivuse.pdfIn PDF document text
    • http://garageanything.com/js/upload/files/fogit.pdfIn PDF document text
    • http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/81970123094.pdfIn PDF document text
    • http://headlinesdinerla.com/uploads/files/salika.pdfIn PDF document text
    • https://ww150007.linebot.net/upfile/files/20210919232847.pdfIn PDF document text
    • https://michelbarbot.com/upload/files/32171784313.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/3e59827983ab4283ac6da61af50d65d0/pikuzuf.pdfIn PDF document text
    • http://recit-de-vie.fr/userfiles/file/xovatoz.pdfIn PDF document text
    • https://highrise.pl/file/44411153045.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/pewodiripelekojigaxo.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/dopevegesakatokovi.pdfIn PDF document text
    • https://hattshopping.com/admin/assets/images/ckfiles/38895813041.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1613da7428a00f---36934914727.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16148e52e37800---mibutumokejubaluluvebapu.pdfIn PDF document text
    • https://capitolmodels.tuzonanet.net/userfiles/file/28272333576.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/fg0sqrlrkpsbuna7ulpijp8ao1/guxunu.pdfIn PDF document text
    • https://portalbime.com/UploadedFiles/New/file/90979000428.pdfIn PDF document text
    • http://htk2.altrodesign.eu/ckfinder/userfiles/files/92539302337.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/solabupobosareroka.pdfIn PDF document text
    • 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_off0000c0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C8 10416 bytes
SHA-256: 533ea7a9795397a297a12bc8b83ef44187ed389eb74e2c661c2fa592e2e158b9
font_01_sfnt_off0000d870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD870 18632 bytes
SHA-256: 0b02318fca4fc4e090fb70f63dcb63d13412b08771cb037d763579921d760a3b
font_02_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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