Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc2692ee9489ae1…

MALICIOUS

PDF

74.4 KB Created: 2021-01-22 01:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a5013759edb51540cf8515761b0712fe SHA-1: b796fac0a55c5af4b6baaf7633329aad126d7546 SHA-256: 9fc2692ee9489ae19db757b1e5bd1029317491e3c9eb85693c2de55615048777
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to a design and engineering manual, likely intended to trick users into visiting the malicious URL.

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://trafffe.ru/123?utm_term=ddot+design+and+engineering+manual+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487413/normal_5fe6708d7e2aa.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/ihihdhb/70005127167.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/ihhc0jh/best_ifttt_applets_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_5fe6d59786e73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411694/normal_5ff823ff65c0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487386/normal_5fe1bed1cf11f.pdfIn PDF document text
    • https://cdn.sqhk.co/sukijubese/jdhhtsR/30840886967.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/9hitjij/fagiwaderolevuxuvulidefe.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/jhfhamF/forbes_magazine_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_5fd9d64a20dc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495550/normal_5fee2f387991e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383451/normal_5fe1aaf5f31cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fe062262cd39.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujotipaxoxi.epizy.com/37785863960.pdfIn PDF document text
    • http://liwubujuwu.epizy.com/goniraripobezidumamebukus.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/21860134255.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/gotopozabuxolavimazivapu.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/zoxulapekejogegufiponu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC42 1528 bytes
SHA-256: 8678461a36318f73caa47be7720532798183d8a18b717e055a12ae2b3be44fb2
font_01_sfnt_off0000e409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE409 5548 bytes
SHA-256: 9d2c6c8ace25a0fb5f6377c31567b16fb2c4e461067f8cbf82a9028d791f4e6f
font_02_sfnt_off0000f6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E0 10332 bytes
SHA-256: 41cbcc424839aed0a4eafefb8e9489f456043b5c3ff143f63ee401553cde69b7

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