Malicious PDF — malware analysis report

Static analysis result for SHA-256 721b202c7d9bd6b9…

MALICIOUS

PDF

93.2 KB Created: 2021-03-30 21:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e55c66a939bdc996179366317f1cca6 SHA-1: 205028e059c4e094d44dc02ef8632d89de7ec456 SHA-256: 721b202c7d9bd6b93b99087f1e361eb3bb4610ba80d0f96bdbe6f53ce3c56db8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain keywords related to a game guide, suggesting a lure.

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://mezovuduw.ru/wix?keyword=maplestory+nightwalker+guide
    • https://cdn-cms.f-static.net/uploads/4463559/normal_603e2495df914.pdf
    • https://gazavado.weebly.com/uploads/1/3/4/3/134331045/bifojo.pdf
    • http://alteramaks.world/what_is_seasonal_depressiono0rwi.pdf
    • http://vizit.store/less_self-reliance_synonymr750v.pdf
    • https://pisixaxonazav.weebly.com/uploads/1/3/5/3/135394173/bf3437deb1a718.pdf
    • https://cdn-cms.f-static.net/uploads/4446166/normal_6057a41440f93.pdf
    • https://sodapovi.weebly.com/uploads/1/3/4/4/134494820/duvow.pdf
    • https://cdn.sqhk.co/rigizisojix/Ewgeavz/mods_builder_for_minecraft_pe.pdf
    • http://changepass.online/jobasalovekametadote7vuuj.pdf
    • https://static.s123-cdn-static.com/uploads/4462732/normal_5ff166e327180.pdf
    • https://fovojewonot.weebly.com/uploads/1/3/4/6/134669065/fatadegusopi.pdf
    • http://kieverts.xyz/illustrator_mac_crack_franaismtveh.pdf
    • https://cdn-cms.f-static.net/uploads/4462982/normal_603c336c80485.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • https://cdn-cms.f-static.net/uploads/4426280/normal_604ba3d4e89e0.pdf
    • http://alteramaks.world/bipetudisepuxosuhr1vb.pdf
    • https://cdn.sqhk.co/kidurukazag/ha1iiia/wartune_sylph_guide_for_archer.pdf
    • http://inostrana.com/dirty_emoji_pictionary_answer_keytfmhw.pdf
    • http://datinge.site/glacier_bay_water_dispenser_bottom_load_setupf95mb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_76f9481c62bb45af9026cfe0c524cc55.pdf?index=true
    • https://4c72699b-aa2e-4dc8-8bd5-1a54e8f938a6.filesusr.com/ugd/f3cb45_4ceb99e99ad24a7bbeacdf74eb97e670.pdf?index=true
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_63ab108ce49649499329e2b81d312873.pdf?index=true
    • 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_off00012dd4.bin
15afc4f3a3ab6daec683ac6dc4870da10027a17bdecf31001ca36575f165644a
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD4 5484 bytes
font_01_sfnt_off00014095.bin
4465d14059b06e9167ffb834a5b2ca6b39966f9362f28808d3ce782a6eeb25c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x14095 11464 bytes