Malicious PDF — malware analysis report

Static analysis result for SHA-256 245def0e83ba7c57…

MALICIOUS

PDF

78.3 KB Created: 2021-06-04 22:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 84f3e19801a836c25a84ddcbe79c136a SHA-1: 11c244f970912817151255ad57e69f6aa4a348f9 SHA-256: 245def0e83ba7c57d71ffdc44f7abbbd065d1b7a39f39de895d82e546fc6e5f8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://crewmak.ru/pbw?utm_term=download+gta+vice+city+for+android+highly+compressed+10mb PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fe0bcb7e0d47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387046/normal_5ff2f0c7f0d97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413850/normal_6037daec893b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_604e685fd82e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_6048f5a9d76b7.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4487431/normal_60b03c5c041d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405654/normal_5fe229e6a5338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_6043298fe1f8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495974/normal_5fcc989f1d84b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_6023afa431bc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386336/normal_605559918b0f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494138/normal_60352b43d09ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369138/normal_5fe599e42ee6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368750/normal_5fdfd657ad017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fatakalewene.pbworks.com/f/what_is_not_a_feature_of_musical_primitivism.pdfIn PDF document text
    • http://kivupored.pbworks.com/w/file/fetch/144506790/stereospecific_reaction_mcat.pdfIn PDF document text
    • http://jolowajuwijo.pbworks.com/f/mavumezodituvuxamatiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb883b00-bff3-4f22-986f-9ad7c538f6a6/90952063369.pdfIn PDF document text
    • http://nugewil.pbworks.com/f/how_to_install_blue_whatsapp_on_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c565442-9263-436a-bec8-3d6dfdbc0fc7/john_deere_d110_riding_mower_tire_pressure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8addc08-34a3-46ad-9f0b-e2f844ec5176/nevamiwepuxuwaj.pdfIn PDF document text
    • http://jebusolole.pbworks.com/w/file/fetch/144524283/how_much_does_wendys_pay_an_hour_in_ohio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64caeee3-a2c3-4e05-a69b-216449d57aa6/yamaha_rx-v463_manuale.pdfIn PDF document text
    • http://ridelox.pbworks.com/w/file/fetch/144450294/wetijole.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_off0000f44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 6156 bytes
SHA-256: 50a9c6d2d4be1563463806c4b9b5f99f56e7015ecb4169dc4472e3a767276e76
font_01_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 10080 bytes
SHA-256: 35abce5cf80100a89ac3fb2c8d5e590ff119e7eabef09c65aadc0c719adfc849

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