Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1dbea218e139c0…

MALICIOUS

PDF

75.0 KB Created: 2021-02-27 19:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8858cc33f09b2d3ca08fd45108db1742 SHA-1: 8fba2614b3236d6282e37c242518a5b3f0287f40 SHA-256: 1a1dbea218e139c0590b97b15558e1780fecd041fbbbc0a6157d57ecf25c2cb9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests the document is designed to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://xezojetit.ru/strik?utm_term=marques+de+sade+juliette+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485436/normal_601eeb80bdbb3.pdfIn PDF document text
    • http://deemonatrafik.xyz/kensington_expert_trackball0u34l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_6013a0cb1bb4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416659/normal_5ff4c967ab285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485801/normal_600e41ae10312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_6015c5050c2e1.pdfIn PDF document text
    • http://prosale.company/jefanikamw1qh5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464527/normal_6008ae57b1377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_5fd1fd462424b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_600c8b9801749.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/xurixado/hoover_steamvac_dual_5_manual.pdfIn PDF document text
    • http://megutid.epizy.com/firogagejukowomivi.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/lagu_123_i_love_u.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/gisosexivadubakitakapozi.pdfIn PDF document text
    • http://xuxusemo.epizy.com/apostila_cade_simu.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_off0000e496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE496 5240 bytes
SHA-256: 38a5a3a77654b0e51c0ac3eff76a041e05b60a7bd7349c160d83c3191ba45a99
font_01_sfnt_off0000f68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68A 12280 bytes
SHA-256: 9ee6baf255126e2710061f2a67d183670278785055200e45415ea865e1e06b60