Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba871852d9431222…

MALICIOUS

PDF

196.3 KB Created: 2020-11-22 02:09:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fa24177f273c8a74b46aef0839a2e185 SHA-1: 5f9952dc15713a352f4a02552e9196dff3a8b5dc SHA-256: ba871852d943122223d9686d4e85b930f10cb7328c5668a5406d1e982dedc0c2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=black+desert+mena'. This indicates the document is designed to redirect users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=black+desert+mena In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401519/normal_5fa49f085729c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5f9549055b077.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/gupuso/sigumuwera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8f32492-69aa-45c9-a5ab-10bce6295f83/como_eu_era_antes_de_vocC3AA_online_baixar.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/dimis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b13e70ad-dbcd-4150-a6c4-e8e7734e4d73/34886750407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6e9c22-d5ab-4513-8153-7d50936d01eb/comprensi_lectora_catal_3r_primaria.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/90405554753.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/dog_adoption_certificate_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/86695593148.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/39742256013.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/dim_worksheet_name_as_string.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/molecular_geometry_practice_problems_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/stem_changing_verbs_spanish_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/ssc_stenographer_english_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26bcf38d-cff8-43f3-a434-b48e374fbd2c/20644310528.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/vaxuseverekexorovan.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_off0002af15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF15 4828 bytes
SHA-256: 873eaa42e6c5652e7070bff260afcd0629e72ee768664bb7a78643351fff2c65
font_01_sfnt_off0002bf51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF51 17952 bytes
SHA-256: a312fc3f4968e85f55036acbfdbcf65edea4a6695120284b52fb2966bdea0a83
font_02_sfnt_off0002f5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5F3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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