Malicious PDF — malware analysis report

Static analysis result for SHA-256 2387e1452983325e…

MALICIOUS

PDF

69.5 KB Created: 2020-12-10 12:08:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6a2a29d19353b12bf27569a5aa4a1d59 SHA-1: d342a2dd1600bfdd847a4c7fe6d0f32a20a19230 SHA-256: 2387e1452983325e953d7cbf05c0b2a0b5ea473f6f45bca2512757986c22c324
96 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 embeds external URLs that direct users to attacker-controlled resources. 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=hardy+weinberg+equation+example PDF link annotation
    • 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://uploads.strikinglycdn.com/files/5ff92c41-07af-44fd-97f3-14b83ee1f0e3/african_american_hymnal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/280155e2-3fa8-41a6-a09a-b70f62b7f4d4/91546720489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b95e0a90-d3d4-4a1f-8048-6ecd7a3e9257/30067224079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c9d2e7-4c1e-4356-b5f6-23f04f12b932/ancient_mesopotamia_political_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7906b758-349f-42d6-b9d9-1e185578c458/coleman_exponent_multi-fuel_stove_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82714031-d57c-4286-8813-d1327177bd58/fokumebenoduvigiritipo.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/11470719325.pdfIn PDF document text
    • https://s3.amazonaws.com/lesepapusojifax/12191951431.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/33842345483.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ded9579eee3ae06a23cc/t/5fccacb46f0099009e5f998d/1607249078883/mini_dayz_zombie_survival_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de25d650-d8d9-47e1-97a2-141941501e60/the_long_dark_how_to_sleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf74fd8-9ce9-46dd-872a-ca1f27c79f82/animal_farm_study_guide_answers_chapter_1-3.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd056700f7af3919d4a9d9/1606223207842/45606353448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/947d84ee-d3db-4934-adb9-a4471bfa4093/aimpoint_express.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf796e42-b356-4066-8e53-e18ecd3b1d47/6621790930.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_off0000c421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC421 5472 bytes
SHA-256: 8f6daff891b9578407c3ab5e8c0c18eeb6d23d95b0b75084c17a516ff7b5f042
font_01_sfnt_off0000d6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A8 10684 bytes
SHA-256: b3457091979aa31e22e20af4240404f4c23e1c6bf6fa6aa6c852366f0991154d
font_02_sfnt_off0000faff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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