Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0a3d47bae9c8dd…

MALICIOUS

PDF

74.8 KB Created: 2021-01-28 05:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 36831985b3d5d093cc772d435e50be03 SHA-1: e94de8ce786fcf58f290688975198346db1a917a SHA-256: 8f0a3d47bae9c8dd3f62876c2a356baa72b76ecf6f4849f63b20a3d0d61a1bc1
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=era%20sosial%20dan%20budaya%20adalah PDF link annotation
    • http://jitokinut.iblogger.org/56887204745.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/hifghih/briefing_paper_template_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5fe8218185a7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_5fd33128a83bb.pdfIn PDF document text
    • http://1xbet-registrat.site/brave_eagle_trainerdh357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_5fe6cd7a86a6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394079/normal_5fce73b0b894d.pdfIn PDF document text
    • https://cdn.sqhk.co/giruzegovu/6nfagd9/gizoxitisesariwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418973/normal_600b0e6f1c28f.pdfIn PDF document text
    • https://cdn.sqhk.co/daruluneti/hhbibnA/wakepula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/78927752849.pdfIn PDF document text
    • http://gusutawidike.epizy.com/correcting_grammar_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/9012951725.pdfIn PDF document text
    • http://fokafupu.rf.gd/bakugan_battle_brawlers_games_free.pdfIn PDF document text
    • http://zezazemana.epizy.com/best_cryptocurrency_trading_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/25151483079.pdfIn PDF document text
    • http://dubabin.rf.gd/31418674648.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/sidevebuwej.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_off0000e628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE628 5112 bytes
SHA-256: 0e1fa402d4471e2d04b78c8befa503dd0f2b8954936470bd02e05733e4148287
font_01_sfnt_off0000f781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF781 11144 bytes
SHA-256: b79722423b34a9925b8bdd82fc28418d3e4a3af36e6516443480633279082caa

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