Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e39b666e9b41046…

MALICIOUS

PDF

62.8 KB Created: 2020-12-19 10:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 579dda23f5aad5f9fa2b2817de59b2b7 SHA-1: 93286209b7d99f1526d9cdae46c65932a9734d02 SHA-256: 0e39b666e9b410465ec776f36b544e3cb3bec0e1b264ff1a6dcb24df4bffa4f3
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 0.9998

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/strik?utm_term=physical+science+chapter+9+section+2+review+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413122/normal_5f9dead2edfff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_5fa334e69e129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fced2eef296a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490127/normal_5fb792c393f9e.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/gurupixabogivaz/convert_to_audio_file_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/geometry_regents_review_packet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12af63dfdd95b60d6c240/t/5fcace27a3bc3d191520abfe/1607126568556/baby_bunting_capalaba_phone_number.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aebbb8467722f1dfa14b/t/5fcb770685bc3a28a60aeb22/1607169810079/world_war_heroes_hack_money_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/lojidosojetititujakira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d81c4e1-3181-4b5d-8be8-2b0e520ac2b8/39034544613.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/bucket_list_marathi_movie_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/medadele/37_inch_tv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79a0c81da8a590db17e0b/t/5fcb6197b6b7366152f7b693/1607164312242/gusoliredoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d63fe2fce462bcadc7f8/t/5fd62644acac596b0cb28434/1607870023603/vocabu_lit_lesson_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/editorial_cartooning_symbols.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_off0000b8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B2 5564 bytes
SHA-256: c1e394126cd1b206dca1eb093696fe92c3a0244edb37da8565449a31ca7a1b93
font_01_sfnt_off0000cbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAF 10060 bytes
SHA-256: e8ec7c908b85df77cd8606f71250295c0a7627027d6cf239f2bb7f58214a655b

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