Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1aa18d2ea63a8f8…

MALICIOUS

PDF

102.6 KB Created: 2020-12-05 16:24:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 992f773d064c514d507c7576b4bdd2b1 SHA-1: f0a7f088ba387ac2daf379bb2ed95f6b4efa443f SHA-256: b1aa18d2ea63a8f8ec89aafceac44f50fc08383a1ef4535615ff3c349689a035
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/strik?utm_term=proteus+2000+manual'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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
  • 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/strik?utm_term=proteus+2000+manual In 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://static1.squarespace.com/static/5fc0cd9260f2895dc1e75cb0/t/5fc8abc192e74531f3d13fe9/1606986693358/ahly_bank_of_kuwait.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada965a7-5570-4d82-b975-b1e667f9f5e7/what_does_elo_stand_for_in_overwatch.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55349be9b6939512836e1/t/5fc60aaa08845d09245a0a08/1606814379042/23114029163.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfbf0bc819f1cf49ea28a/1606286322256/vepofikemerat.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/vuzafurimes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0296731-0823-4ec2-9843-af0fc5460076/what_is_moral_conflict.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/bloomberg_energy_report_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58e654de-95f4-49ef-bdd9-81d09e5f50a2/bafipi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc20ee1f81c9a2a0ce929b6/1606553314122/wavelength_frequency_and_energy_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4cc5f81c9a2a0c98606b/1606372550396/peliculas_de_las_gemelas_olsen_en_orden.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/89625602522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7282ea1-b617-4d63-bf1d-cd8a9ca30548/vekawonadanozon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc376cddf132613bbcdefad/t/5fc571d9f8cdb769c69bc992/1606775257358/55591958394.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_off00014234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14234 4940 bytes
SHA-256: c56812b3fbda004a6d1c48a1fc288ab08c6d9f298a675cee362000f5460d93dc
font_01_sfnt_off000152de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152DE 14412 bytes
SHA-256: a8273c40e15cb6feeaab55ec71867befea2761015dbb4b9ac89dd8c652197c48
font_02_sfnt_off00017e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E1B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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