Malicious PDF — malware analysis report

Static analysis result for SHA-256 974a6e901e3a0786…

MALICIOUS

PDF

71.8 KB Created: 2020-12-21 01:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c08da7c412813027da1e9d686fc72b19 SHA-1: eb3bc4687caefb33fba429ecaab2ad95a35fd354 SHA-256: 974a6e901e3a0786aa2d94ab67bf34734a016b460e9c4dbc4399b786fce6c5e4
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a 'game pikachu classic free'.

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://trafffi.ru/aws?utm_term=game+pikachu+classic+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459784/normal_5fd2297a821d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478408/normal_5fbac0f9cd475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423195/normal_5faee8cc46d6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/texifaxepag/harvard_air_hockey_pool_table_replacement_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/37332154927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4da315-7f2f-4191-a5af-d6d5e9f3230b/wagedakuribulezif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0322d7cc-1f33-4191-b478-98e1b1eee03b/24875782838.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc16425a3bf4b14abaca05c/t/5fc8b133217b3604ede27e8d/1606988083353/best_voice_recorder_apps_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef6a6b9-9962-4380-bd21-01dcb773e42b/notutigezesoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf4220e3-5165-4b72-9a83-42d264e2faa1/food_chain_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf66c1a97599144eef8ac1/1606379205236/wupewexevebila.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/41606806985.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde88431076b30d0a95c29a/t/5fdeddeac18bd5077cab4a87/1608441324615/punjabi_kabootar_ki_photo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcb8151ac7e22a65153ef0/t/5fdcd7029594a91f75353aef/1608308482666/4048465832.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE67 4936 bytes
SHA-256: 8afc2316b0a7649653f3b087df6164d51062050e0c18fb4e08ccae1be4cec2fd
font_01_sfnt_off0000df35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF35 11144 bytes
SHA-256: e8a76715c22184ae8dc580e52fc7ccf845f6b4dc71305632c90898c1449694f5
font_02_sfnt_off00010468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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