Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b34249304c7c94…

MALICIOUS

PDF

77.0 KB Created: 2021-03-28 08:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4400a57ebd8317bc103a27febec92e5 SHA-1: 2344154f20fd03ee244cd9418d695cb8dae2d0a6 SHA-256: 65b34249304c7c94056cff537e48b5ca896939125f684d676517f1db46a05c05
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains embedded URLs that point to suspicious domains, suggesting it's used to redirect users to phishing or malware download sites. The document body, though heavily obfuscated, appears to be a lure disguised as a guide, aligning with spearphishing tactics.

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://ponafet.ru/wix?keyword=pathfinder+2e+barbarian+guide
    • https://metumarexidema.weebly.com/uploads/1/3/4/5/134591821/7633662.pdf
    • http://finansi-7.online/bootstrap_input_text_form-_control_width2xqxc.pdf
    • http://zanovekolasin.mywebcommunity.org/alabama_boating_license_study_guide.pdf
    • http://luminar2-download.xyz/text_to_voice_changer_software_free5gkd6.pdf
    • http://fesotisifofil.mygamesonline.org/practica_de_enlaces_quimicos.pdf
    • http://rupasuwejex.22web.org/kexejijufi.pdf
    • http://erogan-encolumbia.site/446150498056724p.pdf
    • http://drovazvenigorod.ru/why_do_sailors_use_knots_instead_of_mphaidyv.pdf
    • http://fakexexu.sportsontheweb.net/gurixibitekiseru.pdf
    • https://funefazadoma.weebly.com/uploads/1/3/4/6/134648765/wugajejomonat_luxowageniguxe_ludimob_kukojiwazisex.pdf
    • http://kemedejovon.getenjoyment.net/51081073443.pdf
    • http://budofibo.mygamesonline.org/3604777397.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dabesajunelazul.rf.gd/37064064084.pdf
    • http://dodudulu.epizy.com/vulanudoleb.pdf
    • http://bimivopi.epizy.com/self_guided_walking_tour_paris_map.pdf
    • http://gebimosoruj.epizy.com/how_to_win_a_rubiks_cube_2x2.pdf
    • http://tinanatibora.rf.gd/lobenogifiziwiba.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_off0000f13f.bin
82a838206e2a47c7e7f2488fb299924eb875f825ebf938c32611f731a46a494b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF13F 5232 bytes
font_01_sfnt_off0001030b.bin
9425ef425763b3f87eaf4c9730c4b2292eff2f732c5d74c79477be7487f49773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1030B 10676 bytes

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