Malicious PDF — malware analysis report

Static analysis result for SHA-256 934efa2434b2fc31…

MALICIOUS

PDF

65.3 KB Created: 2020-11-24 02:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 6485f8590fb80399faf992c027042fc4 SHA-1: d565846debacd7b31cf229aae8492970648ceb49 SHA-256: 934efa2434b2fc315467ffbd7270c864dc223d5d615a36c9dae4a370015b99e5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating it is likely a phishing lure. The heuristic 'SE_MFA_LURE' suggests it attempts to harvest credentials or abuse multi-factor authentication. The document contains numerous external links, with one pointing to 'https://traffnew.ru/strik?utm_term=divinity+original+sin+enhanced+editi', likely serving as a malicious redirect or download source. No scripts were extracted, but the PDF structure and link farm suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://traffnew.ru/strik?utm_term=divinity+original+sin+enhanced+editi PDF link annotation
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/durikep-bifoxigupu-vadesib-biwufilo.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/supuvevajezelomitato.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/gagiraj.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/free_roblox_card_code.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/76614841474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac433566-ac71-4ff7-a049-bfb63985d58f/elite_dangerous_lawless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c757cb-7627-47de-99da-8fe1c278ea93/delonghi_pac_an125hpec_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/217cf286-f8e4-4f5b-8a07-b3386226cd3e/golf_rival_hack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b41e58-603b-48a3-92ac-755526ce5400/doxuxuzojuzibuwaxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/amor_eterno_novela_turca_cap_54.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c034a98-ea80-4296-832b-5c45efa9d9b3/scrubs_theme_song_chords.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AA 5364 bytes
SHA-256: 12891284a8ed7b1af59ce13aa5ce5f4032c235b44e63a387c47bc137da50d8aa
font_01_sfnt_off0000d3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F4 11208 bytes
SHA-256: 8ae100d224932cb467ef5d8f1f36141f5de36e3bf2c332fae45c2c7fbb797c64

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