Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ebfab07cf2ed3f…

MALICIOUS

PDF

86.1 KB Created: 2021-05-29 15:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 131b53b6e2367d8972be39b558eff355 SHA-1: b29f1ec51caf4fb638841ace5683d23b865e83c6 SHA-256: 02ebfab07cf2ed3fb88f514d25cdbc46a1e65108ab1d9fa4329f2d4bedf09f6e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/strik?utm_term=rockshox+monarch+rt3+tuning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469631/normal_60543a2fcea42.pdfIn PDF document text
    • https://dapapakutuluj.weebly.com/uploads/1/3/1/3/131384169/4726989.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4491925/normal_60b13cca972f8.pdfIn PDF document text
    • https://zikowipon.weebly.com/uploads/1/3/5/3/135300096/5253461.pdfIn PDF document text
    • https://poxovoxi.weebly.com/uploads/1/3/5/3/135398301/norigiferamat-fiwemiruzax-zeged.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407070/normal_5fec3638d15d7.pdfIn PDF document text
    • https://poxovoxi.weebly.com/uploads/1/3/5/3/135398301/ac2b14d7f.pdfIn PDF document text
    • https://lufuzanexitib.weebly.com/uploads/1/3/4/8/134859686/tebifepakixezez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479212/normal_5fdfdc25eb5d8.pdfIn PDF document text
    • https://wozujetibudod.weebly.com/uploads/1/3/2/6/132682293/sekoso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391898/normal_603b28b0e1f30.pdfIn 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/56a56858-44a8-410d-ad37-8677146abae2/41741106012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e85b2d-b94a-42de-be5b-08b183aefe13/juzuvenemeziloxekesodefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a23017b3-58e8-4b67-9759-9f97691fee29/pimaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e3cb881-e033-48aa-8536-e04e1a02287b/lasumivuginodotaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a29ba0-5237-4066-a476-590ebf86ff95/34604714898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c1bff35-4284-4dba-a85c-b58dc46bf906/how_do_you_trade_cryptocurrency_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45a4a51-8ac6-4d4d-a639-309c130e0b11/tepodixulokezemis.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_off00011326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11326 5484 bytes
SHA-256: 5d9074664237fe3e441e29522107700cc1eb0e98c45e5bb4a7cef4d6970e544c
font_01_sfnt_off000125ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AB 11148 bytes
SHA-256: 4fcbdf29d5bcb6a577593050752e1df091de90d28ee2dbef5e66c0aea35f6626

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