Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f0c9e57994b196…

MALICIOUS

PDF

205.5 KB Created: 2021-04-14 23:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 296342c91329ac08f6f2146a4b84b5a2 SHA-1: a69ea770806a3d09346aef8faa4b991278ff6eed SHA-256: 52f0c9e57994b1965b6ef54963114309b9f1de175b11fc461eb1faf2aabbb5f1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a potentially malicious website, disguised as a service manual. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://maypoin.ru/strik?utm_term=2010+dodge+journey+sxt+service+manual
    • https://cdn.sqhk.co/wabajevebe/ihfghhd/55343242655.pdf
    • https://cdn-cms.f-static.net/uploads/4374848/normal_6041cb119ba8d.pdf
    • https://cdn-cms.f-static.net/uploads/4489838/normal_60567f784cbd4.pdf
    • http://lorubuxetorifa.medianewsonline.com/arcgis_tutorial_for_beginners.pdf
    • https://cdn.sqhk.co/ludozenidi/AxjeFia/jerumerede.pdf
    • https://cdn-cms.f-static.net/uploads/4470526/normal_5fdc19c49466d.pdf
    • http://tepoparupomo.medianewsonline.com/ninadebezoganesetogop.pdf
    • https://static.s123-cdn-static.com/uploads/4479212/normal_5ff995ee36b8c.pdf
    • https://cdn.sqhk.co/kedezoge/fYp4haS/43876274530.pdf
    • http://xubanapirobula.mypressonline.com/wen_scroll_saw_blade_removal.pdf
    • https://cdn-cms.f-static.net/uploads/4494436/normal_6028214cb1794.pdf
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5feeef085641c.pdf
    • https://cdn.sqhk.co/pixafosabow/jePLjeo/pc_simulator_mods.pdf
    • http://dazolovegom.mygamesonline.org/how_to_buy_home_insurance_canada.pdf
    • https://cdn.sqhk.co/pewovixosafu/gKhieh2/craigslist_atlanta_jobs_wanted.pdf
    • https://static.s123-cdn-static.com/uploads/4499282/normal_5fc96b0a7ffde.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://labofowidora.epizy.com/algebra_chapter_1_test_answers.pdf
    • http://bofidimasep.rf.gd/74298608215.pdf
    • http://tononade.rf.gd/32537975144.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d6f8.bin
01603ff91b229489fa74968d7099704fd8f037e12ae2a6c4823ef359c7066605
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6F8 5796 bytes
font_01_sfnt_off0002eab9.bin
77bf4b966bf9034ff5c29d040462dedcf92d2b5234c8cb21d99e2d42162ac9ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAB9 11720 bytes
font_02_sfnt_off000312ed.bin
b778697e4b6ce0ccae7911b6423184e4633bd3eccf4460cac772c98ad637a855
pdf-font-stream PDF embedded font (sfnt) at offset 0x312ED 16084 bytes