Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd51763b1c896657…

MALICIOUS

PDF

88.5 KB Created: 2021-04-05 00:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f1ef2febd9a6d7fd307046cf28bdea92 SHA-1: 54b174174f6668ca108a35b463f107b422794e82 SHA-256: bd51763b1c8966575e2997b49124b19d7b05b4cee854d91c4e86ce45efdced76
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 0.9996

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://dugedepap.ru/strik?utm_term=pascal+triangle+real+life+examples PDF link annotation
    • https://cdn.sqhk.co/lilapanorup/hk5icic/27628841682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452374/normal_6026f8ec516c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481157/normal_601e085257f7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452624/normal_60415157ec298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467277/normal_5fc95f63125f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_6046037a354b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_601d36ce6d8fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451574/normal_5fe8aee874646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445103/normal_60357ad9d7ff7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489615/normal_6058a183679c6.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/gificje/barber_shop_nyc_reopen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492575/normal_5fce5e14519cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448330/normal_605b721c9f229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_60380fb877a4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_600a3ede58165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484114/normal_60567830dcce2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_6064066b22bd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://jagofebasej.epizy.com/99649495167.pdfIn PDF document text
    • http://befadiw.rf.gd/23104914818.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DA 6332 bytes
SHA-256: fa7caf5dad1f16e878a2fb549dd52d431b895b4307c50a890744ef41db8a3e73
font_01_sfnt_off00010d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4D 5404 bytes
SHA-256: ad96a5c54927b7330223e45083d6e0240c1bc81724d317b32a991211c1beb0ad
font_02_sfnt_off00011fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FA0 12064 bytes
SHA-256: 9203f5ad135ac020214f4595f69e78cea8c944435ffcb3657d8c8f1baa535aa1
font_03_sfnt_off000147b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147B9 2976 bytes
SHA-256: ebf05c96491838055bac04e7e9ee97caff4ce7a388d32f1b7364ede65110f9aa

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