Malicious PDF — malware analysis report

Static analysis result for SHA-256 3066ef189a8115ca…

MALICIOUS

PDF

75.3 KB Created: 2021-09-19 19:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aeae66e9245da056477215d18d688ec7 SHA-1: f45e904239c3a4c6c8e2f565c13ef680f3555d18 SHA-256: 3066ef189a8115caa47dee6152c902a149f6d115fb8ada34ac5dbee91d8353e5
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The 'SE_CALLBACK_LURE' heuristic indicates it's designed to trick users into calling a fraudulent phone number, a common tactic in tech-support scams. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs suggest it acts as a lure to potentially download further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://tvsporedi.si/vsebina/vurizigoz.pdf In PDF document text
    • http://lctrading-gmbh.com/ckfinder/userfiles/files/74531657367.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/wizepoxiwatebemovugox.pdfIn PDF document text
    • https://istanajpdua.com/contents/files/43086961507.pdfIn PDF document text
    • http://autoklej.pl/app/webroot/media/files/71611268031.pdfIn PDF document text
    • http://sancheonglittletheaters.com/upload/userfiles/2021/09/files/210915110147.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sixesajiwiradejoma.pdfIn PDF document text
    • https://byocamacho.com/ckfinder/userfiles/files/lewoz.pdfIn PDF document text
    • https://ventsistem-bg.com/userfiles/file/53161759166.pdfIn PDF document text
    • https://mallncart.com/userfiles/files/gusinutizov.pdfIn PDF document text
    • http://thetestmag.com/userfiles/files/padixomasonudujadoki.pdfIn PDF document text
    • http://ingpoggi.eu/userfiles/files/85231154225.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/manuzunonoretorodi.pdfIn PDF document text
    • http://saringkarnwood.com/UserFiles/file/lalozamopa.pdfIn PDF document text
    • http://jnejendomsdrift.dk/userfiles/file/2489899888.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/kbfddk219l9o4ucidn3rhf9dj8/rotimagejojisineseb.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/gemogejalakidejozerim.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/16038290538.pdfIn PDF document text
    • http://kartinatv.org/uploads/files/napirubifagozoxusixuti.pdfIn PDF document text
    • http://gocoachfox.com/userfiles/file/31789017294.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403a2414325---28220994416.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/96968344561.pdfIn PDF document text
    • http://mingmitrcoffee.com/user_img/files/kinojeg.pdfIn PDF document text
    • http://wohntraumgmbh.at/gabutanalo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=name+all+chordsPDF 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_off0000c206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC206 10316 bytes
SHA-256: 3fdd2fa5b9bebe8bf55895d181494a5cbc655f36f76f8819c5dc4c4173f5a4dc
font_01_sfnt_off0000d93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93F 17832 bytes
SHA-256: 9a95ccc1377cb4d0c4889845cb7151c50e2eadfe2e5260cd22d0f82b5d73b084
font_02_sfnt_off0001079c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1