Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd742d0dd1f7ae23…

MALICIOUS

PDF

76.2 KB Created: 2021-02-20 03:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 60cefd16fa384662d087ad60a4a2220c SHA-1: 0e0aa9f9a2999a746bbd7a25e5521f5565220f7d SHA-256: fd742d0dd1f7ae23b63ff6dcda5e54f8a12950872d72fde554ce8bf2ee105c45
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'seumenha.ru', likely a lure for the user to download a malicious payload disguised as a user manual. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing attempt.

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://seumenha.ru/123?utm_term=krups+egg+cooker+user+manual PDF link annotation
    • http://vuvopogawuxaxax.22web.org/apex_launcher_license_key_free.pdfIn PDF document text
    • http://profapp.pro/lesofobapukimej74l73.pdfIn PDF document text
    • http://getcreditcheck.info/82568330708f5qkn.pdfIn PDF document text
    • http://fashion-deals.xyz/endless_ducker_world_recordg6q4t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424029/normal_5fff4cc2c2f54.pdfIn PDF document text
    • https://cdn.sqhk.co/mobixipotex/iihb9N0/polaroid_originals_b_w_film_for_i-_type.pdfIn PDF document text
    • http://beach-fruit.fun/hindu_wedding_invitation_ppt_templatlhsb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446651/normal_60145ff7180c2.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/evony_the_kings_return_guide2mmru.pdfIn PDF document text
    • http://excschool.ru/2001_polaris_scrambler_400_performance_partsbbd5b.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/yChbjed/werewolf_the_apocalypse_video_game_trailer.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/lowuwofuxali/62844683213.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/gufidane.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/97360473496.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/14690370160.pdfIn PDF document text
    • http://vudalulok.rf.gd/module_4_practice_test_answers.pdfIn PDF document text
    • http://pilulozames.epizy.com/oceanic_basin_landform_definition.pdfIn PDF document text
    • http://zitamekoliliwe.rf.gd/avermedia_media_center.pdfIn PDF document text
    • http://sozidaxaguzir.rf.gd/50418643555.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_off0000ec6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 5284 bytes
SHA-256: 98d5b6dad626e45f7291d5e3187ff50d6fd241ee2e3df4e8e728e3c278449952
font_01_sfnt_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 11072 bytes
SHA-256: ba7c373c68b6adedeb6006d38fe1181b02dab262798504779e31842b7d8f4bba

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