Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6bc9cbc782c20e…

MALICIOUS

PDF

70.1 KB Created: 2021-02-01 16:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8ae67eef4d04fe031cde2629a30961ae SHA-1: ebeb5db0e933897418465cfce660b9bc1a37e4db SHA-256: ae6bc9cbc782c20e38d6fa4bc380437286627dbe6f2dbdb6010e3475cbe75f76
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a phishing or scam attempt, as indicated by the 'SE_CALLBACK_LURE' heuristic and the presence of numerous external links, some of which point to potentially malicious content. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics further support its malicious nature. The document likely aims to trick users into calling a fraudulent support number or visiting malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/123?utm_term=samsung+s7+unlocked+australia PDF link annotation
    • https://borojixupoluba.weebly.com/uploads/1/3/5/3/135316148/35840c90.pdfIn PDF document text
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/8c131ac6bc4.pdfIn PDF document text
    • https://jabasamivesapev.weebly.com/uploads/1/3/4/0/134041177/76b08.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/9ZgjhaH/52890158782.pdfIn PDF document text
    • https://finutobinito.weebly.com/uploads/1/3/1/4/131406284/gogikokuledi.pdfIn PDF document text
    • https://cdn.sqhk.co/kupibetefuko/hhyjgjh/mirimiweje.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/ijIhgje/jezujusugenigika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426953/normal_5fce892ce412f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409623/normal_5fe32d53a8a0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fcdf78603cc4.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/b8033870fe.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/romoka_tuvuxofoboxi_susaloteg.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/QseXjgP/84510892579.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/tipejosibodiporozadi.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/angular_8_bootstrap_4_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/vemonevoripa.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/57994084552.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/33096053091.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/49961706870.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/unstable_angina_ecg_report.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD397 5508 bytes
SHA-256: 15f02b39c46c576b77cd98c57370849a01c670c560feff19d8f2d68888f9917f
font_01_sfnt_off0000e640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE640 11012 bytes
SHA-256: 1426b0aea91b0a5d1d2bd303761a84a8a238650f78b1a5679553d399806f11d4

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