Malicious PDF — malware analysis report

Static analysis result for SHA-256 950107c455def7ff…

MALICIOUS

PDF

83.7 KB Created: 2020-12-27 09:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 83c611771fb658fe7c66d1077cdc8bc9 SHA-1: e6d48fb02ad42391b18fab3d2caa34553a0c0c6d SHA-256: 950107c455def7ff6b7f522db7c20272ded498abd6908c53eeae0c43e99de3d1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm designed to direct users to other sites. The document body, though heavily obfuscated, contains text related to a 'grocery shopping list ease app', suggesting a lure. The presence of multiple unknown URLs and a ClamAV detection for 'Pdf.Phishing.Trojan' strongly indicates malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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=grocery+shopping+list+ease+app PDF link annotation
    • https://gagegopered.weebly.com/uploads/1/3/4/8/134880179/kulogiw.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/gipij.pdfIn PDF document text
    • https://cdn.sqhk.co/sekeniti/RZanSCG/movie_quiz_ultimate_level_13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447085/normal_5fbc59d33a3a1.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/regovadeje/canon_canoscan_4200f_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/pursuit_of_happiness_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41152e74-4af6-4f2c-86b0-f9f8bf8e42ea/94880526068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84edd8c6-c94f-42dd-8cea-52a363fd16fd/gta_liberty_city_apk_download_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/guroxinulojawekexujud.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/angular_4_form_reset_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/10th_english_book_back_questions_with_answers.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_off00010cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF6 5328 bytes
SHA-256: 9f7f3e2eb4d6ba2aca1c6ff181c1b03b2025ef2c5c95303823fddc1c4ff07df7
font_01_sfnt_off00011f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F20 10164 bytes
SHA-256: 64cb06421b5b0491dcdd9f12b167baeacc7476963e999f6a84687b5876691d99

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