Malicious PDF — malware analysis report

Static analysis result for SHA-256 207f0d1bfb192661…

MALICIOUS

PDF

66.3 KB Created: 2020-12-17 02:34:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d0c24fc65d5fd74c72110c522a65cb3a SHA-1: 7b91ae6784f87e2879be259ac91b58ba547756e6 SHA-256: 207f0d1bfb1926611ec856acf257779aa027b9544caeab6a35b37f7f9cbda7d9
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://traffine.ru/strik?utm_term=altland+simons+book'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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://traffine.ru/strik?utm_term=altland+simons+book In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_5fb7f934e82b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415767/normal_5fc85e45ed989.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422385/normal_5fcd6650e0501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f88728fe257e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485828/normal_5fb38bab549cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393506/normal_5f960752b1c7b.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/wizidimawag/68817550620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a603c5ac-513b-4d34-ad36-1e83e8ed4886/fancy_pants_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e006a879396864083677/t/5fc1dd0ff3de5e49b5a8967d/1606540560307/kelvinator_freezer_146_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b57d4bdc-5d49-4220-ba8a-ee6ecef93837/how_to_pronounce_french_alphabets_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c079820-2674-4b8e-9b32-87f56fd57166/sony_kdl40s4100_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc115278ef7301f8b11bee7/t/5fcdc633d336b863f0e2959e/1607321140045/sadad_payment_through_al_rajhi_bank_atm.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/catenative_form_verbs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1248145a8629dc786a55/1606292040544/gilumesuxebenuvapox.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2923b7848ba205d233c3f/t/5fc856baec83506b0476fb15/1606964924023/why_should_you_study_business_management.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_off0000c627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC627 5068 bytes
SHA-256: 74a07f0d261ef56be5de0c97e24e6aa0efbe83766d6c5bd908f43b84a7e74c86
font_01_sfnt_off0000d751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD751 11208 bytes
SHA-256: 3be93723bd73296732dac58f14ce07ec38d9a81be078afcce488159b430df529

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