Malicious PDF — malware analysis report

Static analysis result for SHA-256 586d1ee04eacb705…

MALICIOUS

PDF

66.9 KB Created: 2020-12-26 10:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82a8734a0454c12757b9c31f99648288 SHA-1: 80403a1d4fbddb9f95f092347810b6a1a65011bb SHA-256: 586d1ee04eacb705e6609d51225a46fa6483acc7fc54c2b21dbe38f3c6bc506e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a page offering an 'apk download', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a malicious document designed to trick users into downloading unwanted software.

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://traffnew.ru/strik?utm_term=final+fantasy+xv+pocket+edition+apk+download
    • https://cdn.sqhk.co/menaleratupo/dhdHiha/wafenenitoworofagawenuw.pdf
    • https://static.s123-cdn-static.com/uploads/4392199/normal_5fde2acea7246.pdf
    • https://cdn.sqhk.co/wememiguw/Kgi1Ja4/92550753129.pdf
    • https://cdn-cms.f-static.net/uploads/4424405/normal_5fac4499d5c7c.pdf
    • https://cdn.sqhk.co/nodomepe/hnghiiA/bone_infection_tooth_symptoms.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/da9bfb07-2907-419e-a969-43c4a877d4ea/suxajemonatigarakobovevi.pdf
    • https://s3.amazonaws.com/fatikonavori/26171377478.pdf
    • https://s3.amazonaws.com/sukedil/acrylic_sheets_for_sale_in_ghana.pdf
    • https://s3.amazonaws.com/tugafebip/adanga_maru_full_movie_free_hd.pdf
    • https://s3.amazonaws.com/zirojopemup/dofupilemisused.pdf
    • https://uploads.strikinglycdn.com/files/b733aee0-2e7e-448a-8f64-3876952e1182/best_table_topics_for_toastmasters.pdf
    • https://s3.amazonaws.com/safenalavojuwu/basic_boogie_woogie_piano_sheet_music.pdf
    • https://s3.amazonaws.com/megulu/medical_leave_letter_format_for_school.pdf
    • https://uploads.strikinglycdn.com/files/126ec38e-7abc-416c-baff-2e26b297546f/puzusizi.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_off0000c6a0.bin
9533025e76e7879cac206f82c30808304e358b100e330d95e2d58b6d5d9274e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A0 5396 bytes
font_01_sfnt_off0000d937.bin
8a7effcb53606a0c35da6e89abd55df45d49104b0b33972c244ccd3c3a7e6283		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD937 10984 bytes

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