Malicious PDF — malware analysis report

Static analysis result for SHA-256 174af25426ba210a…

MALICIOUS

PDF

76.0 KB Created: 2021-03-05 16:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: df5b74706699da053ef1fa10e181f8df SHA-1: f99aa91d8ed2d7df6ce586adf41cc45f893954b9 SHA-256: 174af25426ba210a1d1f5cb72e57926474833b896fd51421e3744343a186cfa8
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, contains keywords related to 'marine engine performance parts', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=4.3+marine+engine+performance+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463526/normal_5fcec0c552876.pdfIn PDF document text
    • http://zavodtriumf.com/904281797390yjjl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417653/normal_603855cfea069.pdfIn PDF document text
    • http://help-nanny.site/public_speaking_skills_in_telugukzice.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5fcf4699a5392.pdfIn PDF document text
    • http://reweder.site/love_animation_video_for_whatsapp_statusskotw.pdfIn PDF document text
    • http://bluhgang.best/koropobabdxuzj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375088/normal_5fe543a9e860c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489844/normal_602e629edce49.pdfIn PDF document text
    • http://amsidisi.xyz/alegreya_font_free_ttfyl558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423772/normal_5fcbd0395b23b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_603d400cf3844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483587/normal_60082b1d1b4b0.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/juzewojavomofew/mercado_bursatil_colombiano.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/widisoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfcad339-1958-41d7-b05d-ccdfb7cb8676/samsung_galaxy_s9_edge_plus_price_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44e193f5-f379-4a29-8002-d076910bd191/71256178039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c73d81a-abe6-46e9-873f-209dbb6c09fc/tezizalum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7eadf6f-0667-4bd6-b514-95c6f414b20e/relationship_manager_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/proceso_de_auditoria_financiera.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_off0000ebb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB5 5492 bytes
SHA-256: 6d44fc695328aa7f1d9d2f400e5651476a390ba19325213440b916e448bac965
font_01_sfnt_off0000fe63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE63 10688 bytes
SHA-256: 1cc3a9b33a9f3de7ba2aa5fb4d82fc93d197ac377fef1e9a6541d6b1e76ced38

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