Malicious PDF — malware analysis report

Static analysis result for SHA-256 10dbe358a4162c0a…

MALICIOUS

PDF

70.6 KB Created: 2021-03-04 09:18:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 84cf1392ae75bdecde06758ce3097bcc SHA-1: 38e7c938989b66eab4d76b41bba320ed9ca71604 SHA-256: 10dbe358a4162c0adf09ac77328013ed044d5b84cb339109708e9007ac646995
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/award?keyword=magnavox+mdr557h%252Ff7+manual PDF link annotation
    • https://cdn.sqhk.co/puzadowoke/heqhdgi/react_drag_and_drop_npm_install.pdfIn PDF document text
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/tazifi.pdfIn PDF document text
    • https://fetuzulozolu.weebly.com/uploads/1/3/0/7/130775138/59d1e80886.pdfIn PDF document text
    • https://wopedibim.weebly.com/uploads/1/3/4/5/134585971/pinumig-niwisemos.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/daPGhhG/23986985860.pdfIn PDF document text
    • https://lebugaboforov.weebly.com/uploads/1/3/5/9/135976333/dujemutera.pdfIn PDF document text
    • http://wasukowoko.iblogger.org/motorola_two_way_radios_commercial.pdfIn PDF document text
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/mivuditosikipu.pdfIn PDF document text
    • https://jewutejaj.weebly.com/uploads/1/3/1/0/131070173/9862111.pdfIn PDF document text
    • https://cdn.sqhk.co/pabopimi/hjaRig4/finitog.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/4UpjqPA/wuvosovil.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/wujafivabipo/42562955816.pdfIn PDF document text
    • http://dopovis.myartsonline.com/langston_hughes_education_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/30280075222.pdfIn PDF document text
    • http://vevosewis.rf.gd/pugenilurot.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_off0000d33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33B 5516 bytes
SHA-256: b519f60046d6ebe8b9d6c016d9f4b0ba02ee06b26c4496157370cd9bab6f440c
font_01_sfnt_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 12540 bytes
SHA-256: 91f85a4d498b8cea1fb3adf294816d1f0e1dc02484ad34e7cde354e83ddd88c6