Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b7efd9be3f0748…

MALICIOUS

PDF

70.9 KB Created: 2021-03-03 11:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0030fc5780a7a59e0b6d9de9b28c0ed5 SHA-1: 101eb8e57a3ba5322c287ea1f187f27ebd124e0d SHA-256: 54b7efd9be3f0748f5c45d993786464f25584ca32f5c46f60cf58560b5a494ee
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically pointing to 'https://fokemale.ru/wix?keyword=manual+de+instrucciones+de+la+consola+wii'. This URL, combined with the ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing attempt. The document body, though heavily obfuscated, appears to contain text related to a Wii console manual, serving as a lure. No scripts were extracted, but the presence of embedded URLs and the phishing classification indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/wix?keyword=manual+de+instrucciones+de+la+consola+wii PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386330/normal_60348fce67e2f.pdfIn PDF document text
    • http://reflectionss.space/lenifozoxenopomonesy8s2p.pdfIn PDF document text
    • http://b0xberry.online/crossword_puzzle_maker_in_englishtbkf6.pdfIn PDF document text
    • http://nukicew.xyz/kepatumulinojjdkc.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/37904611308.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/dazinibonofobi/valse_d_amelie_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/decimal_division_worksheet_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/carbonate_minerals_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/vixez.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/sizerajilamijewumadegoz.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/harley_touring_service.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/ma_challan_form_uos.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/first_come_first_serve_eu4_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/57648923900.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/16266992051.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_off0000d4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AB 5028 bytes
SHA-256: 3b841627b43f1f54cb98815843723d5fe3d4742da6bb8cf3b8e70d039e31b792
font_01_sfnt_off0000e5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F1 11960 bytes
SHA-256: b6d2ca545aa9c54d21fd51f549f41770a11ed5d00aa487b6534596fb945be0c7

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