Malicious PDF — malware analysis report

Static analysis result for SHA-256 187945a292dc6521…

MALICIOUS

PDF

70.1 KB Created: 2020-12-20 03:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 00e288b413432b607b1fc79dc20b42df SHA-1: 1fde8474d98e679aee2c84a6ee849e2048d8a7ef SHA-256: 187945a292dc6521fc2255ae4a3f69bb029f6c3dfe88eac733f6d6082b84da74
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://cctraff.ru/strik?utm_term=mess+dress+air+force+afi In PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/mefofo.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/2f934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375199/normal_5f90a2cdcdb5a.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/suximawo/kogowoxadopeketafede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38a381ec-67de-42eb-ae74-6c6a1a35c8eb/free_kinetic_typography_template_fcp.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/xudegibofod.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/situational_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/jotixosakamitezuz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd5508eb685147a09c9c9e/t/5fddd30def735726d24ba245/1608373005697/3435533311.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/bose_sounddock_series_iii_digital.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/flower_garden_yoshi_s_island.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97aa6b33-4f28-4ac1-8046-a1965e50e2b8/the_rise_of_the_warrior_cop.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_off0000cbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF7 4592 bytes
SHA-256: c8689d3c1bd7888afd32b729a30229cf6d48cf6731c92a868f5a990751c67eef
font_01_sfnt_off0000db9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9F 10068 bytes
SHA-256: 37df4f822c4915ad89239cba5ea5b9e9d5516b44d442a89ffaedd118dcf20677
font_02_sfnt_off0000fdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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