Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6f8910f9f5568a…

MALICIOUS

PDF

94.9 KB Created: 2021-02-19 14:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e7ab35009e906f836cb2f2173b12ab8c SHA-1: a34e475ac272c9a2ab38477fff34484a6e3a7408 SHA-256: df6f8910f9f5568a295cda7daf52bfb097dd35d6753faf9c3cfa80d67f537388
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'seumenha.ru', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

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://seumenha.ru/wix?keyword=transformative+learning+theory PDF link annotation
    • http://fuckfrsky.com/disputing_medical_debt_on_credit_report3ddvm.pdfIn PDF document text
    • https://dimegowogox.weebly.com/uploads/1/3/3/9/133999821/a7e0efa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470222/normal_6001e9587c540.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/H3ibjbK/farmland_tractor_farming_farm_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/icZjafj/mini_dachshund_weight_range.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500692/normal_60221f1b8c6a1.pdfIn PDF document text
    • https://wubinuju.weebly.com/uploads/1/3/4/6/134642725/177092.pdfIn PDF document text
    • https://xirovule.weebly.com/uploads/1/3/4/7/134749068/jamixepitema.pdfIn PDF document text
    • https://regutipedazuvi.weebly.com/uploads/1/3/1/0/131071249/gofokam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468814/normal_600ae5ac26940.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/id4ijhi/queen_greatest_hits_iii_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473619/normal_5ff5fd9994d40.pdfIn PDF document text
    • http://bigswinner.space/formation_plombier_chauffagiste_nicetpftr.pdfIn PDF document text
    • http://7evenrp.ru/38989581396o714s.pdfIn PDF document text
    • https://wexarasi.weebly.com/uploads/1/3/4/3/134351888/gofumelobojemozupegi.pdfIn PDF document text
    • http://golden-bridge.pro/waxapakozatokibojm8xd0.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/kobivimelelo/binezekiwavikozijobadu.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/solarwinds_network_topology_mapper_free.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/medical_office_assistant_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/aasimar_cleric_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/arduino_code_guide.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_off0001367b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1367B 5292 bytes
SHA-256: 1b47e3fc4a89a02d6cfbcd99c274e7e2c5710a8eee7f2079cd363b0f39575063
font_01_sfnt_off00014859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14859 11460 bytes
SHA-256: 8da15da4d42b20d83d06f70dd36d2016b6d3933f8246d37edf2663a2bb83e6e6

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