Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d5fa2cd8889fdb…

MALICIOUS

PDF

67.8 KB Created: 2020-11-24 04:13:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e8e03f0ad89aa837be306488e7c7246f SHA-1: 39563a353cbbcbef13d28620c9c85687c7845ae6 SHA-256: 64d5fa2cd8889fdb830edbad0bebd4ffea2ab269412b4779310d833557fae891
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing. The document body, though heavily obfuscated, suggests it is related to academic content, likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing attack aiming to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/aws?utm_term=antiderivatives+and+indefinite+integration+worksheet+answers PDF link annotation
    • https://folesatabija.weebly.com/uploads/1/3/4/4/134441350/wavona.pdfIn PDF document text
    • https://liloxowilobo.weebly.com/uploads/1/3/4/2/134265539/gakegevip.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/jeluwotufekip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5f9bc3f05f278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_5fb25c9e1988d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421477/normal_5fa4a2161bb9a.pdfIn PDF document text
    • https://tebefatudu.weebly.com/uploads/1/3/4/3/134329870/6898307.pdfIn PDF document text
    • https://lolijigi.weebly.com/uploads/1/3/4/7/134700793/8320060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5f8e4efdd1766.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/2aa079e2-1bd6-4344-b05a-e30bd0d611cb/66610764113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b8de9a-5433-4c3d-9b56-ee3d9e374c0c/dragon_quest_heroes_2_character_crea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76712db-79dc-443a-86a8-9e1f28a7d190/47937096445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/204a2f1e-ce5a-4dbe-8e98-5397de07204a/rizegilafojizowaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c565b26-4057-474b-85ca-634eab59ffa3/amelia_bedelia_unleashed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/285079fc-0f56-4221-a2f0-c0d82aef646d/90921544813.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC086 5344 bytes
SHA-256: 49fc989295438bdbbd1f39c06f9f6dde65ee02ab41e9c23947f082fbb0a642e2
font_01_sfnt_off0000d2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C6 14076 bytes
SHA-256: d5f480f5f8b05d473c2738cd1c0d1dacd3b647647b60ecc8384c9ce285d41305

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