Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1bf1271c2b02d65…

MALICIOUS

PDF

83.8 KB Created: 2021-02-23 00:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9ba4ac92f69030f34693f8cadbec558d SHA-1: c4b929f1c6bf0e71c99a1ee86ced3f1e807da479 SHA-256: b1bf1271c2b02d65a0e6ad263654f3c3273f421dfb1e582942fec46b33515772
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 malicious domain, disguised as search results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of a suspicious URL and the document's deceptive content point to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=maytag+washer+dryer+reviews+2018 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495034/normal_5fc827ceaaf1c.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/Tkjdiga/vademomal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5fd2867ce724c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365567/normal_6004dd1cc07b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_5fdb8f06074a7.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/EPsjghe/4868101122.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/JOrigig/risk_management_glossary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451752/normal_600c45e200fae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489041/normal_5fe99acd62f3c.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/jinabom/94348636070.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/ijazat_old_movie_songs_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/72532370131.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/61972008208.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/61240716698.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/zufudokojij.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/kelvinator_inverter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/tevobiwixekefutuxuxid.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/36354448582.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/tarepo.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/student_ka_full_form_image.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_off000108e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E0 5832 bytes
SHA-256: f160c03aacf932abb8293ea3f8dc69ce7a76e3692608a7e407c0e5213583f875
font_01_sfnt_off00011ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE0 10780 bytes
SHA-256: defd27addb87fd0b7149454d783ad25da8085d419d6bbf89c7dd8eecec84fe58

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