Malicious PDF — malware analysis report

Static analysis result for SHA-256 db64f191a7255834…

MALICIOUS

PDF

99.6 KB Created: 2021-03-04 13:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 01d91fa663d61b2535f16af14719a61f SHA-1: 3298e4ab7a345e2cd7b66e168e1900dfe6b78387 SHA-256: db64f191a72558344433dfd94099d5246f42e70c65281cda3d96d113ccd3d74b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a URL related to 'Attack on Titan part 1 trailer', likely as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. While no scripts were explicitly extracted, the presence of external URIs suggests a potential for downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gimoguvi.ru/wb?keyword=attack%20on%20titan%20part%201%20trailer PDF link annotation
    • https://cdn.sqhk.co/vaminika/Fgikhas/housecall_providers_careoregon.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/iQdqjjD/68049425032.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/bBBhahg/my_chess_puzzles_solutions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_5fe6ce245de54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385230/normal_5fef97c1a8201.pdfIn PDF document text
    • http://euroshopmn.space/119845121488zbhl.pdfIn PDF document text
    • http://retys.space/60719467405qte43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_6026603dd0e20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473618/normal_5fd6ac51cdb6b.pdfIn PDF document text
    • https://cdn.sqhk.co/puxitika/bj5Vibx/95137138308.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0fd154-40c0-49b2-ad51-6c7b07faeb1a/schlage_lock_key_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/430f0c23-2083-4862-9358-016d6437ca1e/65629973123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071bedd8-8c82-47d7-ab7a-f9d2c72bb4b7/96913074985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9bde345-40b5-4c10-82a3-5570ae423211/sizemapevobaxag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9556e7e0-0f31-4efe-bebc-ed06add195d8/the_mama_natural_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beaf42a7-bc39-4648-8be4-7c3f69f9074e/97881131748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0310511-1716-4f6c-b2af-2d0ab56920e7/excellence_definition_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/la_familia_de_pascual_duarte_pelicula_descargar_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/delonghi_alfredo_healthy_indoor_grill_manual.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_off00011f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8D 12344 bytes
SHA-256: f44bce69636893e2bb9ac40331566b076b545738b33e7c5edaa450ea982b76c8
font_01_sfnt_off00014859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14859 4852 bytes
SHA-256: 6c6a043871b98719db9f269d127e5391b827a6c600c84019e33039f8fcae6dcc
font_02_sfnt_off000158f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158F3 12072 bytes
SHA-256: 0d7148276a81bbc4b505bc0c2b098798c429fb3c12dfb175c70c98dbaea5a98c

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