Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf59254095152bd…

MALICIOUS

PDF

156.7 KB Created: 2020-11-23 16:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d5edac4ee07823292d8ed5985bd0546b SHA-1: 144b1a42f2913b36da8c8c25258d2fa893f7929d SHA-256: abf59254095152bde5eb2e497a258efab7ee456c06e3b817d3090bd3e305ffff
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=conga+dance+fortnite'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=conga+dance+fortnite In PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/8546064.pdfIn PDF document text
    • https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/xumifomikizofames.pdfIn PDF document text
    • https://votewisuzub.weebly.com/uploads/1/3/4/6/134605747/mawowofos_danuju_norukuxedez.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/47787fb6af2.pdfIn PDF document text
    • https://gudogetoji.weebly.com/uploads/1/3/4/6/134634169/5880567.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/7105b3d7-b96c-47cb-9e1b-1db96da455cf/69001611023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3c650f4-7f9f-421a-834a-7fbcb9117a41/26032408078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e047c01c-8b4d-42dd-8535-c4bcbd79d758/zonodawerikuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eabf29f6-393c-4568-8e83-5063ed56c19d/xodotafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440ca2ba-ace0-48c5-97b4-05f22e64ad5c/different_types_of_cleavage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c595bc4-2273-44aa-977d-91e253c35008/rainbow_six_siege_free_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84869cfb-7394-47d7-9d14-ac43c6a22865/pdf_reader_download_for_pc.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20C83 2952 bytes
SHA-256: cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c
font_01_sfnt_off00021712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21712 4884 bytes
SHA-256: 03a2d403546ecfbcba9bf6960b570aad2ca841713e82a8609b7d14ee3af2570a
font_02_sfnt_off000227bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x227BD 11668 bytes
SHA-256: a66d87392a285c5ccd762e84eb08a6e1f66ec3f6b95dc4b6a76785f2ad69dd1f
font_03_sfnt_off00024fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24FAD 16120 bytes
SHA-256: e245d83aa9810ba0fce5f2bb0e5f561f89fd5e90631648584630540fd40b3bbf

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