Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a86f8e86129778…

MALICIOUS

PDF

77.6 KB Created: 2021-03-25 05:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c3acd2a54fb5b164d482f4bb7d5de4b7 SHA-1: 2f7e4390ad88351918c1c74fae876d89145eebba SHA-256: e4a86f8e861297784cd998850868b464a45a849f4237a883f02c6a8ac646234c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://golowaki.ru/123?utm_term=capitulo+1a+core+practice+1a-+3+answers PDF link annotation
    • https://cdn.sqhk.co/naliwanik/iaF4e6h/fonts_emojis_fonts_keyboard_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/ijKnFxa/epic_games_free_games_history.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/60hnidd/58812833874.pdfIn PDF document text
    • https://cdn.sqhk.co/jenetuwuda/aXiehft/99271373036.pdfIn PDF document text
    • https://cdn.sqhk.co/vitozogog/39xViMw/55851908613.pdfIn PDF document text
    • https://cdn.sqhk.co/dikozogub/gT1YXhd/31065086221.pdfIn PDF document text
    • https://cdn.sqhk.co/wabasenenem/gzgemij/vuduzixigipazumej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5feb65c277a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481168/normal_6009cda06ab2b.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/dX8jiZj/32951815709.pdfIn PDF document text
    • http://zekagepalido.iblogger.org/b._ed_syllabus_2020_odisha.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/rgjjb4b/origami_hex_star.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/r3Bwjf8/81298382049.pdfIn PDF document text
    • https://cdn.sqhk.co/xigofidiw/GjeAaam/seduwufulinumipawazeleriv.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/etjfheF/secret_du_coran_pour_etre_aime.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/h7iSBgd/97042367928.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/sjaeLCM/rogulonapelewumokakoza.pdfIn PDF document text
    • https://cdn.sqhk.co/bodavadu/dyIEvw2/anti_heroes_dc_and_marvel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajobovu.epizy.com/capitalization_worksheets_for_grade_3.pdfIn PDF document text
    • http://fevejalamozek.epizy.com/39953322556.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 5172 bytes
SHA-256: a77b04216a8fcef51f8fb6d0a219d9b3deab7a88e90de7a6dfb989ef01ad1db6
font_01_sfnt_off0000fe7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7E 12448 bytes
SHA-256: 00c4b7a07a27328c6f00b2ca64ef31a3526c8052553143578a0dc18a1e84e2c1

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