Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd43db3dfd9fcf7…

MALICIOUS

PDF

138.7 KB Created: 2021-05-09 10:12:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 833db734d2562095bed512d1bba7ebf1 SHA-1: ba44746f5df7198ea8386191f3defe6751631a0e SHA-256: 0fd43db3dfd9fcf7adfa26831cbd12c9901f68aa44a4a855ac376f69c6d21de8
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. The document body, though heavily obfuscated, contains text that likely serves as a lure. The presence of multiple external URLs suggests an attempt to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=are+amanda+palmer+and+neil+gaiman+married
    • https://cdn.sqhk.co/jujadiziga/chfajhD/40350675119.pdf
    • http://women-ita.space/76849316167ut4ff.pdf
    • https://cdn-cms.f-static.net/uploads/4490516/normal_601ecfd80ba8b.pdf
    • https://cdn.sqhk.co/lafuwexale/5ljcjhC/lozenixamexu.pdf
    • http://pristav.pro/dizawirugitomufideje87g97.pdf
    • http://btsworld.org/leveling_guide_ff14xo50k.pdf
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fed2275692dc.pdf
    • https://static.s123-cdn-static.com/uploads/4405195/normal_5fde8f6a6a8f6.pdf
    • http://wgathering.org/vovibotibulirakayymkt.pdf
    • http://olx-delivery.cc/mufetemusis56smm.pdf
    • https://cdn-cms.f-static.net/uploads/4408875/normal_601d133b23a3a.pdf
    • https://cdn-cms.f-static.net/uploads/4426550/normal_606a806391491.pdf
    • https://cdn-cms.f-static.net/uploads/4407086/normal_601691fdaf16b.pdf
    • https://cdn.sqhk.co/jugemito/uhjfq7G/juwezuv.pdf
    • https://cdn-cms.f-static.net/uploads/4368991/normal_60571dc2adad9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_3f18b01b7c414a66833c4c095ebc4b16.pdf?index=true
    • https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_f88dfbcf5f5a4bc38447a602b67300cb.pdf?index=true
    • http://judomumofu.rf.gd/the_ultimate_guide_to_business_process_management.pdf
    • http://xarujusezofa.epizy.com/18527363106.pdf
    • https://65d0a56f-4074-4e8f-9acc-29e6f8e8f663.filesusr.com/ugd/37655d_eb43b8c2d9dc4403b8ef7c368e20d443.pdf?index=true
    • http://suzufesa.epizy.com/android_backup_all_apps_and_settings.pdf
    • https://5d55c623-01b0-417f-8131-8dfd0334080c.filesusr.com/ugd/9ef046_9923f2cbbb864d658de3809940ecae92.pdf?index=true
    • 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_off0001e3e4.bin
ced4bd108e8d9c9ed60625797410e76d61368672c3621557200df20cd72b93c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E3E4 5088 bytes
font_01_sfnt_off0001f51b.bin
99a5870c497f19281fa96a602883f99fed82557a4a7f27ee0495d7f3b487eaa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F51B 12200 bytes

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