Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c300e4f79bd801…

MALICIOUS

PDF

70.1 KB Created: 2021-02-17 16:22:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: b43e887abc693d50496b413f6d0aa4c0 SHA-1: 0cb70de6d08cde1e8d602210c5b9c55a2fd17ced SHA-256: 56c300e4f79bd801f31f3203130c2a315c72ea253f3419b0efe3f11b7d26f522
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the presence of external URIs and the nature of the detection suggest an attempt to redirect the user to a malicious site.

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://bologen.ru/strik?utm_term=nikon+coolpix+l310+battery+price PDF link annotation
    • https://cdn.sqhk.co/mogizilo/2hhrvkI/ftd_dementia_signs.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/PEOie4F/rasamexebarukadapibuno.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/jger2ih/busatevinujapuxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498678/normal_5fc81cd759c68.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/3giHbie/trendy_what_trending_today_in_kenya.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/ZSichiH/87630383882.pdfIn PDF document text
    • https://cdn.sqhk.co/kemuxilajig/TrUnuwL/the_battle_cats_pop_cheat_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_6011904ab37a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_6021bd93a7fdd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407066/normal_5fe34cb41c107.pdfIn PDF document text
    • http://art-practice.org/nokup6430t.pdfIn PDF document text
    • http://dazipuv.iblogger.org/garake.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446027/normal_5fca293451093.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/jgDsjjd/91287093073.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://malebujezasipip.rf.gd/photo_sticker_maker_apk.pdfIn PDF document text
    • http://tikixowogozomi.epizy.com/power_pole_transformer_fuse.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_off0000d602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD602 5452 bytes
SHA-256: 4c61e9f080de0b853da104c397a79f3667c2a3856dfdac93be1d29837f549d41
font_01_sfnt_off0000e8b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B3 10200 bytes
SHA-256: 9898a5601ea7284223463f712cd0daeda81efa266b62945a8aab6145cd1b200e

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