Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30e2762ec2f41de…

MALICIOUS

PDF

75.5 KB Created: 2021-03-17 21:14:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28a31491bf884950df628fa19fbd8787 SHA-1: 77d16ab8c58e0cb3d3380894bef534b13774b387 SHA-256: b30e2762ec2f41de5033407dc90de0d04e77358bbfe754c3b9526a206cea50be
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or engaging in phishing. No scripts were extracted, but the PDF structure itself facilitated the malicious URL delivery.

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://lozipotod.ru/award?keyword=mapamundi+politico+capitales+pdf
    • https://cdn.sqhk.co/ledirevobep/eGiehcw/95760593835.pdf
    • https://static.s123-cdn-static.com/uploads/4407060/normal_5febc4a19caa1.pdf
    • https://cdn-cms.f-static.net/uploads/4425723/normal_5fda375d86a6e.pdf
    • https://cdn-cms.f-static.net/uploads/4377109/normal_602f79e806de6.pdf
    • https://cdn.sqhk.co/naxemikomeb/kIifWjg/86784700279.pdf
    • https://cdn.sqhk.co/ribafesupuro/inigjgc/ice_cream_cakes_close_to_me.pdf
    • https://cdn.sqhk.co/rarinuva/gchwxjd/farm_animals_for_sale_in_ga.pdf
    • https://cdn-cms.f-static.net/uploads/4415070/normal_6051836493dff.pdf
    • http://kagaromorin.medianewsonline.com/xulewiru.pdf
    • http://vowufijetapiko.sportsontheweb.net/witcher_books_vs_games_timeline.pdf
    • http://fumexijana.getenjoyment.net/400_microgramos_a_miligramos.pdf
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5fc7ba837cb8c.pdf
    • https://cdn-cms.f-static.net/uploads/4383450/normal_60228ba3de93b.pdf
    • https://cdn.sqhk.co/zebenane/ieibjdJ/incremental_cost_vs_marginal_cost.pdf
    • https://cdn-cms.f-static.net/uploads/4368475/normal_603f7e5729700.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/eec96887-e643-4374-8afc-22cc5b140250/sentry_contact_number.pdf
    • https://uploads.strikinglycdn.com/files/7dbfc8b5-1d29-4723-9c00-d651541ba9be/jack_reacher_never_go_back_in_hindi_movie_download.pdf
    • https://uploads.strikinglycdn.com/files/fb65dd41-e54d-4181-974d-ea8cbe894fc0/21878573819.pdf
    • http://bifiwapaz.onlinewebshop.net/appcoda_swift_4.pdf
    • https://uploads.strikinglycdn.com/files/d8bcbed0-0c6e-4b99-9205-66035d072a1e/honeywell_quietset_tower_fan_replacement_remote.pdf
    • http://ratobewiwigu.atwebpages.com/how_much_does_verizon_jetpack_cost_a_month.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_off0000ec26.bin
b7e2312cb68301ef116fb1d8c6821382ff8fe3a6969634b0562e52dda3f28e0b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC26 5212 bytes
font_01_sfnt_off0000fddf.bin
4e39173bff7418258d6a1af6156c164efda0f31d8ddda4205352716ba98c0d9f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 10228 bytes