Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8d9270dcd3355f…

MALICIOUS

PDF

67.6 KB Created: 2020-12-20 04:02:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8c80bb2373b7b6e0490459532baf09ba SHA-1: 275c5b87be12f67c1338b04b3b4e2408fe87abb5 SHA-256: 1f8d9270dcd3355f16ce0ed4ed2e61b9d2e1ee8913f72d96f98d399e0ee5f9c9
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://trafffe.ru/strik?utm_term=wockoder+record+player+wobble PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b93c92e3-5087-4729-9d32-a726b02d29e4/lords_supper_verses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab2658c-652d-4ed0-a2c4-8e42ff126f77/wekutelefajasej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28eaf9698b02c7f2b2aca/t/5fcc1aea5177ea328cb129b4/1607211755395/kokatagifulilovelakeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f35e7c-54d9-4fb6-bd7c-12ff296f8d10/metag.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/bazanufiguzewukobenelito.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe301fa97599144ec1fbbf/1606299680776/nervous_conditions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc123632e537a05ef0a8a98/t/5fd1fffe9a9e5443ac7f4ed5/1607598079180/87542818206.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b109405d5340f34a7138/t/5fcfb10276f3eb1a46ef8233/1607446787139/19999878278.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9fba3254dd38eed5a910/t/5fdcdffd550b0003eb041723/1608310781171/job_rejection_letter_templates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5cbaf68612547ed7f91bc/t/5fc8357846ef2e08cbad1fdc/1606956411768/tumblebooks_apples_and_bananas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd09d2e6-58a6-49fa-a471-130638360348/word_for_giving_back_to_society.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffb332bbd740658015355/t/5fc1b80208845d0924ca9255/1606531075090/tufevolose.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/85679499876.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/78705222409.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_off0000cba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA9 5300 bytes
SHA-256: 44cf42af8eff241aff41bedee06182efccd072dfa37eef4a7e63d5acc3c7c94a
font_01_sfnt_off0000dde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE0 10468 bytes
SHA-256: 24ffe11c08b6927926a7ffd31bc93c206cbd3db97bed61ff56c96781b9b0c561

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