Malicious PDF — malware analysis report

Static analysis result for SHA-256 585675ab2ee822b6…

MALICIOUS

PDF

82.5 KB Created: 2021-02-21 23:13:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97dba3214cdeb16c4db9cf13e1dc6ac0 SHA-1: 4d32cf690b0637efc1a2bff323c4867155ff7796 SHA-256: 585675ab2ee822b6d45feb30a989c455559a25097814f82270b39eb8050e073a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, redirects to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous suspicious URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=what+is+the+function+of+presentation+layer+in+osi+model
    • https://cdn.sqhk.co/xaranoraf/jenjdjC/84852414427.pdf
    • http://hristogrigorov.com/lowe_s_hours_today_labor_dayk0nsy.pdf
    • http://abreudesigns.com/824418664571dqpv.pdf
    • http://subonus.ru/trane_air_conditioner_parts_canadanagxt.pdf
    • https://cdn.sqhk.co/nefakovuwot/iehihgC/linear_independence_zero_vector_proof.pdf
    • http://kyhni.site/stock_market_bookv0eej.pdf
    • https://cdn.sqhk.co/nulaliki/Dhcjjzj/battle_loot_adventure_guide.pdf
    • http://detonic-ordina.website/tisimeguktzgp2.pdf
    • http://brumbum3.xyz/178391548077ot7e.pdf
    • http://hydraruzxpnew4af.exchange/liderazgo_con_proposito_rick_warren5su45.pdf
    • http://trudogoliya.online/nedadixado4ewen.pdf
    • http://detonicinitalia.website/27665158981y1dfe.pdf
    • http://naturapple.space/jivis9u2kt.pdf
    • https://cdn.sqhk.co/nomuzali/jdtMjfK/hashtags_for_instagram_photography_page.pdf
    • http://hiziryigit.online/dokotin2808.pdf
    • http://betmoy57.com/puburobojalapivnaonl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jufonab.epizy.com/totifikubomubexefel.pdf
    • https://s3.amazonaws.com/zamuriza/xedidekigamopav.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_off0001051d.bin
d0b2ee5ab665c419a47d743007250c97e5b0fb4ddb9b267dfa31dc1b8112385b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1051D 5508 bytes
font_01_sfnt_off000117c2.bin
e0bc505ecc553c4a283596332d43971cc5d75914ca6183b88745e8d99fd159bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117C2 10708 bytes

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