Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7bccc81b9cc5499…

MALICIOUS

PDF

74.3 KB Created: 2021-01-23 23:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: babe1bf577669f11f5d5936c172179a2 SHA-1: d1ddc513c23a46199f74ad481820535725451e48 SHA-256: c7bccc81b9cc54998516c0316b57b4e8987626e73dc3ca11bfeff29ad5311fd6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting a lure related to game ROMs.

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://trafftec.ru/123?utm_term=super+mario+64+rom+hacks+z64 PDF link annotation
    • https://cdn.sqhk.co/xelalizogim/EticRhb/black_friday_iphone_8_plus_deals_2019_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374708/normal_5fe22fe718169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5fffe96401ae0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5fcf686fd49fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379221/normal_5ff7d51ccdaa0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5fdd96eeaec15.pdfIn PDF document text
    • https://cdn.sqhk.co/kokademesuz/K1Tjdid/clash_of_lords_2_espanol.pdfIn PDF document text
    • http://gesabagipo.22web.org/best_european_travel_guide_books.pdfIn PDF document text
    • https://cdn.sqhk.co/fetedudi/hictQn8/52643157030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_5fd3aedd5db65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471236/normal_5fcac46c87f05.pdfIn PDF document text
    • https://jaluburevajag.weebly.com/uploads/1/3/0/8/130874017/55438a6bd.pdfIn PDF document text
    • https://nimukebobe.weebly.com/uploads/1/3/4/5/134527887/kefujiwoni_labewupez_busimif_feximifise.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/jebokizez/bibuvabigilanef.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/aaa_your_driving_costs_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/amphitryon_plaute.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/zivijigavuwufokalumin.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/55363557844.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_off0000e251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE251 5600 bytes
SHA-256: b59ebec68739c3f49aed08f24ed659886001e0147a3d9c2d93948f9d83a1dfc8
font_01_sfnt_off0000f53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53A 11440 bytes
SHA-256: 2cb21bb348668ada71d78c2f16442d25be0b0ea9f3eb8f763e37361fdd05fc56

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