Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed3665fc91ab76e…

MALICIOUS

PDF

68.9 KB Created: 2020-12-07 20:59:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7b891b476adaec16b7da8396243a8b3 SHA-1: 7640c5a52ea003cb06acb26c0a1c99aed98c34d5 SHA-256: 1ed3665fc91ab76e4dd6e956ecfee9364bccf0d38779e04f7c7bd1bed89f1bd6
136 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick the user into a fraudulent transaction, likely involving a fake prize or parcel delivery. The embedded URL points to a domain associated with such scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://traffking.ru/123?utm_term=limited+brands+hr+contact
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fb2c2d180be7.pdf
    • https://cdn-cms.f-static.net/uploads/4501660/normal_5fbe2e35e9d94.pdf
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fa33cbfa99dc.pdf
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5f9f72ae7e179.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6d7c8cd4-378f-4c1f-a7de-7d1fb3f72aa6/low_key_party_ideas.pdf
    • https://s3.amazonaws.com/fasanag/catia_tutorial_free_full_download.pdf
    • https://s3.amazonaws.com/vavebufevodutob/cemu_breath_of_the_wild_improve_performance.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd035d64be903ae6414352/1606222686324/tamanhos_de_papel_para_impresso.pdf
    • https://static1.squarespace.com/static/5fc1559bc6d9645836252c59/t/5fc5ef009ee0f32b872066af/1606807297592/lezizosenuneje.pdf
    • https://s3.amazonaws.com/mefovu/29403041102.pdf
    • https://s3.amazonaws.com/sepawi/baverenapomogokumajisuri.pdf
    • https://uploads.strikinglycdn.com/files/f2fcc842-5a80-4d0b-a008-988d58778e22/41050608251.pdf
    • https://uploads.strikinglycdn.com/files/dfe15b72-c11c-4266-a869-bbec87adcb7e/81930772681.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdce.bin
caad91a142b2a21869a96a153b10114eed28a6b2e118472fcd93b3a112b90fd1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCE 5228 bytes
font_01_sfnt_off0000df66.bin
3dfee571fe532c9d254240a3d93f130be83c44d1817522fc6070d3cbdf9eb6eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF66 11928 bytes