Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9e9ea7e9eb4a17…

MALICIOUS

PDF

67.3 KB Created: 2020-11-20 20:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c84183eac66cf4efd2610121b1eaffde SHA-1: 9d2b22cd1707b91b710e550bc422927b480be246 SHA-256: cd9e9ea7e9eb4a17b62428ad34f6c3d8cd56774adffa3a391c8e13ba077d378f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to distribute further malware or phishing content. The embedded URL 'https://traffset.ru/123?utm_term=thy+soul+shall+find+itself+alone' is a primary indicator of a potential malicious redirect.

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.
  • 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://traffset.ru/123?utm_term=thy+soul+shall+find+itself+alone PDF link annotation
    • https://nurituxokel.weebly.com/uploads/1/3/4/8/134849265/nafida.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/4edf12fc69c22a3.pdfIn PDF document text
    • https://roluliduz.weebly.com/uploads/1/3/4/7/134771057/naxakanoxar.pdfIn PDF document text
    • https://nuwaruwavup.weebly.com/uploads/1/3/4/3/134362645/810346.pdfIn PDF document text
    • https://fosapiluni.weebly.com/uploads/1/3/4/6/134653401/ba594864013fa.pdfIn PDF document text
    • https://selamosufuk.weebly.com/uploads/1/3/4/4/134463567/2930110.pdfIn PDF document text
    • https://segelibuvak.weebly.com/uploads/1/3/4/4/134451144/zerivegeje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374835/normal_5f8ba5ab51eb1.pdfIn PDF document text
    • https://zokunokakepano.weebly.com/uploads/1/3/4/3/134353677/difususuto-gixaneponevus-kesuzegenaniz.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/3a9c18e193e02.pdfIn PDF document text
    • https://dowisapi.weebly.com/uploads/1/3/4/2/134266119/7fe77cc.pdfIn PDF document text
    • https://papekukikaduli.weebly.com/uploads/1/3/4/3/134361343/befezavokedebew-tatulexes-fuleruwaloxaza-xopanoxarasebov.pdfIn PDF document text
    • https://pressbooks.com/app/uploads/sites/59422/2018/12/Poe.spiritsofthedead.mariahpalmer.m4aIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bfb327c-2afa-4932-bce7-0a68a9ec50e1/les_multiples_cm1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9300a07e-12a6-41d3-a10c-95b2cb565821/nifuk.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/sharpe_s_tiger.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_off0000cc2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2B 4948 bytes
SHA-256: 6a944958d0314e56396af9b881b00d18515d8949d6e5a396a3c0516b1a51de48
font_01_sfnt_off0000dd0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0C 10384 bytes
SHA-256: 417c4dcf3cd496185ce76e1b284ad3ecb2e5694e883559598c903163a6eef898

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