Malicious PDF — malware analysis report

Static analysis result for SHA-256 4743ce0410ca455f…

MALICIOUS

PDF

61.7 KB Created: 2020-12-17 08:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d2c34663566122f2752a9ec0ca4dc297 SHA-1: 088bc20a6cb9b129dea81fd365a8672b1e14ae7d SHA-256: 4743ce0410ca455f94d9550e0e3f58a45e1b1fcc98282210ea363493fc4c724e
96 Risk Score

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 0.9996

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://traffset.ru/strik?utm_term=run+on+sentences+worksheet+2nd+grade PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365653/normal_5fca83e7d1025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fa84e1dea618.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389358/normal_5fcfa68962db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f9402b4c5204.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fd2d1ef5cfd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc33310ec917750a3e6ac3f/t/5fc7777009f4d56e8f86b1fb/1606907761520/zuwolozarovagokofagujul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10f0fab79f442f22a8155/t/5fc2c54ba97599144e530dd2/1606600011997/senomajomenaxogu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1627ad26ff1194f77136a/t/5fc5cd47eaf37e3b6465676a/1606798667274/accounting_1_chapter_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/fupuzesevodosaminikefepob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/592d45f4-8ad5-4bca-bd85-ae158674065e/one_thousand_ways_to_make_1000.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/airline_guidelines_for_carry_on_luggage_size.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/panasonic_aw-_he40.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15b021452f90b7fe87f28/t/5fcc3ec5f94b6402b20db810/1607220936198/40909494414.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_off0000b6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D0 5464 bytes
SHA-256: 02107afaa7bbf8bc848d95474b1612d37d3aac3de571ae6c1e08bbe80435456f
font_01_sfnt_off0000c976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC976 9648 bytes
SHA-256: 2064ee39a057510216c65754421a347df50f8a16ca1d25f08c8a8524ca55e3be