Malicious PDF — malware analysis report

Static analysis result for SHA-256 02893beed070f490…

MALICIOUS

PDF

76.5 KB Created: 2021-02-24 21:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: aab54d85d6cc808b72d453728dfd07a1 SHA-1: d82686644dcaf73ff364bcef51d7130845924734 SHA-256: 02893beed070f49066c2169d811328ae04adbf609f082f130920b460d728aa4b
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF_URI heuristic indicates embedded URLs that are likely used to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://baarspo.ru/strik?utm_term=how+to+rotate+google+satellite+view PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445531/normal_5fef8b5526ce2.pdfIn PDF document text
    • https://taxajefikudo.weebly.com/uploads/1/3/4/7/134765143/vowebidifolobizad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495975/normal_602de74e293f8.pdfIn PDF document text
    • http://begdas.space/air_conditioning_and_refrigeration_rex_millerlj3oe.pdfIn PDF document text
    • https://romugazasemagop.weebly.com/uploads/1/3/4/8/134897733/bf6829ae2d79b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5ff17652da92d.pdfIn PDF document text
    • https://xovigojimere.weebly.com/uploads/1/3/4/8/134854331/fidevodugogil_vutolitarojun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458390/normal_602e381327add.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417214/normal_6018cba012877.pdfIn PDF document text
    • http://piredvizhnik.com/93688749616pqjya.pdfIn PDF document text
    • https://sitixibabu.weebly.com/uploads/1/3/4/7/134749551/0c5e3f021fa65.pdfIn PDF document text
    • https://solusolifodijal.weebly.com/uploads/1/3/4/4/134433047/438d3ea.pdfIn PDF document text
    • https://leniwexobopusez.weebly.com/uploads/1/3/4/7/134713406/fidijap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/vikanulofusogarikaroteban.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/32286973692.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/mejoguwelupa.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/14672248421.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/badrinath_movie_in_malayalam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32B 4648 bytes
SHA-256: 9e2d420a9d65615a5ef5baa862160a3496d93b57fa36f7c2a565e4c6b7025e10
font_01_sfnt_off0000f31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31C 10292 bytes
SHA-256: d8019cdb5c5d626a2440a9e4946a84d2732ac76219cbd5ae1a524cfb3e25c8e6
font_02_sfnt_off0001165f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1165F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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