Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b00273469305a3c…

MALICIOUS

PDF

73.5 KB Created: 2020-12-20 18:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1aa80ff238582a8b78587b978cb6e68d SHA-1: 5654429b34fd9d3341feb081525de59fb0067501 SHA-256: 9b00273469305a3c32229c17667a73982e8cc3392f1aad86a9a760f0fbfe91f6
104 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a payload or redirect the user to a malicious site for downloading cracked software. The document body, though heavily obfuscated, suggests a lure related to 'Autocad 2016 crackeado'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/strik?utm_term=autocad+2016+crackeado PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fc9cbd16c8b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386086/normal_5fb2df01aa89a.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/minaxigevani/pixiva.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe06339b1ed03538a18157/1606288947752/killer_instinct_riptor_moves_snes.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/malformaciones_congenitas_estructurales.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf705edabee7b4406e0a6/1606219526486/lacrosse_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/japanese_food_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/didakuzo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fced398eec7ca5c3650c22c/t/5fd606ca72b1137fa96bf3dc/1607861965396/wow_classic_prot_pally_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/iago_and_emilia_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/61713090640.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/android_splash_screen_template_psd.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_off0000e42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42B 5256 bytes
SHA-256: becd8ee85f147e7a01cf57914c0dc88481e9993df1a02350a63919276b2351e6
font_01_sfnt_off0000f624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF624 10812 bytes
SHA-256: e08d89c861118dd759170fd264076a31226830449866f7d3c1c6671445481f0b

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