Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ad9b43ea2ab796…

MALICIOUS

PDF

67.8 KB Created: 2020-12-21 15:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4b95b932396ececca9e49ca436c8eb6 SHA-1: d0865e5f0b551e2359394977e702c2f0972e7349 SHA-256: d5ad9b43ea2ab79672d2356d7dc1758066aa199bb70617b7e821e6655e16f98c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'trafftec.ru' was extracted, which is likely the destination for a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a game, suggesting a lure to entice users to click the malicious link.

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://trafftec.ru/strik?utm_term=space+engineers+hydrogen+engine+not+working
    • https://cdn-cms.f-static.net/uploads/4388293/normal_5fa25287166cf.pdf
    • https://cdn-cms.f-static.net/uploads/4445735/normal_5f9fa23b1006a.pdf
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5fa316a9e7002.pdf
    • https://static.s123-cdn-static.com/uploads/4369908/normal_5fdcc986de76c.pdf
    • https://cdn-cms.f-static.net/uploads/4486350/normal_5fb85ccecab77.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7a185a81-5389-4e6a-869e-90025f815624/watch_heaven_is_for_real_on_youtube.pdf
    • https://s3.amazonaws.com/wufujudisu/abandonei_a_gabriela_sua_musica.pdf
    • https://s3.amazonaws.com/womirofop/armor_stand_mod_minecraft_pe.pdf
    • https://s3.amazonaws.com/ladojenefe/25422546902.pdf
    • https://static1.squarespace.com/static/5fc51642239b0722914c4266/t/5fc9780a56e7c50656c2b01b/1607038987584/rzr_buggy_4_seater.pdf
    • https://static1.squarespace.com/static/5fc656352cf09257bd907783/t/5fc99695822fbd3263d811b0/1607046807225/porufajopagakemimidut.pdf
    • https://uploads.strikinglycdn.com/files/00b042a3-db25-40a0-8de4-1a466b4f7ccc/vido_xxl_vido.pdf
    • https://s3.amazonaws.com/wurivuve/49030468650.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_off0000ca1e.bin
05cbdd16109503eb1e0eff2454226e75b4d37d96976ae0e4969a5814e7601e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1E 5664 bytes
font_01_sfnt_off0000dd76.bin
01f4363997d46f1074ea97d261e6fe370c23a19012a8eaf367658144f8cfce9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD76 10856 bytes

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