Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2e22e8988ee262…

MALICIOUS

PDF

78.5 KB Created: 2021-03-24 22:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31753a98f1bfebe65e3bc288d9235a1a SHA-1: 7dfca12e0b7ea23db56857e5986849c042c3e0a7 SHA-256: 3e2e22e8988ee262f5d44e6ae8b97fc912ef8a329d116013af2b5e440f58ee4c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile suggest this document is designed to trick users into downloading further malicious content, likely a PDF disguised as educational material.

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://bologen.ru/award?keyword=400+essential+english+words+pdf
    • http://dorightunion.com/worksheet_on_possessive_nouns_for_grade_5ukgsi.pdf
    • https://cdn.sqhk.co/zozotetowa/Tjawjg4/65883574862.pdf
    • http://xivazokib.medianewsonline.com/48513863228.pdf
    • http://afracheat3.xyz/2012_mercedes_e350_cabriolet_owners_manual392cv.pdf
    • http://dupamineni.medianewsonline.com/3888699975.pdf
    • https://cdn.sqhk.co/vasibejovej/iamgGRi/monash_university_sustainable_development_goals.pdf
    • https://cdn-cms.f-static.net/uploads/4479223/normal_600bde358470d.pdf
    • http://mitutepoka.medianewsonline.com/how_to_get_a_journeyman_welder_card.pdf
    • https://cdn-cms.f-static.net/uploads/4452608/normal_6020f9b67459c.pdf
    • http://naturka.space/dollar_tree_careers_indeed4ss8a.pdf
    • https://cdn-cms.f-static.net/uploads/4458388/normal_601299711dcf3.pdf
    • https://cdn.sqhk.co/pekotegafod/cuDChh3/94140908508.pdf
    • http://cocobeautybar.ca/best_free_quit_smoking_app_uk7sgy0.pdf
    • https://cdn.sqhk.co/senogewuki/AM9jchw/my_little_princess_castle_apkpure.pdf
    • http://my-favshopg.online/resnick_halliday_krane_volume_1xog4f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_0ce73092a4dc4bcc939e7a5b59432337.pdf?index=true
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_43dbe22323074dc7ab55fca953c6c0ae.pdf?index=true
    • https://30f21d72-2b41-4965-a7bc-2abb02bf1ded.filesusr.com/ugd/47e66e_a1f6da06a5214830a632c64a59250bf1.pdf?index=true
    • http://vakizonozajaxe.onlinewebshop.net/netgear_router_wnr2000v3_specs.pdf
    • http://newepizudef.atwebpages.com/86954497153.pdf
    • http://xolavozezimodan.onlinewebshop.net/witcher_books_vs_games_reddit.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_off0000edf5.bin
b6f0ce483e6ee269fde19e246e336663958e725cef6e24bf0a3d5195c9fa10bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF5 5528 bytes
font_01_sfnt_off000100d1.bin
9418845f41d743e63bf5e2ebe047ae9c93d764a9625957dee33b079b1337d328
pdf-font-stream PDF embedded font (sfnt) at offset 0x100D1 13472 bytes