Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b3edf0c05a7268c…

MALICIOUS

PDF

66.6 KB Created: 2021-04-04 18:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 77454ae3fc585e6e587aeb527a47004b SHA-1: 2b449fc0ecb7451724f109322b35be58de064ab0 SHA-256: 4b3edf0c05a7268c9ee0e6572d9b4d035ea4cf779fbf4924b5df0af510f0469d
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'fokemale.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, appears to be a lure related to a product search.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/strik?utm_term=kenmore+acceler+ice+filter PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414515/normal_5ffb682e1dbc1.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/j7JMje2/39222897644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426262/normal_60504fb31031d.pdfIn PDF document text
    • https://vunidiripoga.weebly.com/uploads/1/3/1/4/131453449/kixefol_nevifopuzi_dumifu.pdfIn PDF document text
    • https://jokanile.weebly.com/uploads/1/3/5/9/135962808/wugitelavisub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499282/normal_601fb84b8dd31.pdfIn PDF document text
    • https://jotinebemoti.weebly.com/uploads/1/3/4/6/134681432/02f17f14bba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_604f1400cafd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387813/normal_5ffda9c926d6b.pdfIn PDF document text
    • https://buvefejam.weebly.com/uploads/1/3/1/4/131453018/5af33bee699.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365586/normal_5fffcfb893e1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_6027c958aae85.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/Vqc3tgd/14363837126.pdfIn PDF document text
    • https://vokavubibobudew.weebly.com/uploads/1/3/5/3/135316357/8771769.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_5ffeb1e7a8dde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482020/normal_5ff715da9afd1.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/jazamerijekufol/sengoku_basara_heroes_2_apk_ppsspp.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/4444421340.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/83530974950.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/xabisup.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/sheet_pan_chicken_with_harissa.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_off0000ca46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA46 4820 bytes
SHA-256: 9fa96dc9354ec63588b3d96a920fa727fa6d68013305fbf41be05d7076b62333
font_01_sfnt_off0000da96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA96 10144 bytes
SHA-256: 1da1e670f26736d727550ee52a7c1e0b17cc8587d00b7698cf0d74ee0366ffef

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