Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e5c84b0c6a5e31…

MALICIOUS

PDF

73.8 KB Created: 2021-03-02 19:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 02283bc26b9f0eca16a6b1060cbfa40c SHA-1: be5e4906ee2b236ecb4d7e484ce08210caf1430b SHA-256: f1e5c84b0c6a5e31f464d615482ab9eacc26d7e1a917bae431982541a9476615
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'scarce resources'. No scripts were extracted, but the presence of embedded URIs and the high confidence detection scores indicate 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://leonvi.ru/123?utm_term=what+is+scarce+resources+example PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482413/normal_5ff88ab8a1da2.pdfIn PDF document text
    • https://kasitawudak.weebly.com/uploads/1/3/1/3/131380619/wovebixez-nezuzevu-revizufev-konaziz.pdfIn PDF document text
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/bawupoz_zonogusogugi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389830/normal_5fcd6eef504e3.pdfIn PDF document text
    • http://kungfumalibu.com/fajumuwawasojakunobi2phpu.pdfIn PDF document text
    • http://sberbank.link/985280912721uvyf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417813/normal_602f3057564da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_603b2fe014cb2.pdfIn PDF document text
    • http://bunnygummy.ru/benson_idahosa_books_freee2h53.pdfIn PDF document text
    • http://artdebug.site/roland_barthes_mythologies_summarylwofl.pdfIn PDF document text
    • http://onesmall.space/5606422142stfm0.pdfIn PDF document text
    • http://mmmuuuue.space/beyblade_metal_fury_games_for_androidsdc3m.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/fulosobezur/25565959614.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/atwood_g6a-7_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/18589846618.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/legendary_game_of_heroes_card_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/55682983750.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_off0000e3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A8 5252 bytes
SHA-256: 9af725a0340d4cf2c6bc545effafbf5fdb1e53c4cd6e341e1fcd16ee0ae726e0
font_01_sfnt_off0000f56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56D 10784 bytes
SHA-256: 79e7616bd1ab5dbe565f49f80349fbb78fbea6dd0f98355eefcac0c0545e7d58

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