Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48a5462a16b1126…

MALICIOUS

PDF

42.7 KB Created: 2020-11-03 08:39:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a7426feb7d6db06114b5a0b932f05d62 SHA-1: 5bccb44f68625efd3d88f300425f5b953bd0fd34 SHA-256: c48a5462a16b11262c9ebd2c19806fb5779b3616b79b16b907947d65e3fe6427
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to external resources. One of the primary links, 'https://ttraff.ru/123?keyword=ghana+mali+and+songhai+trade', is flagged as a known malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.ru/123?keyword=ghana+mali+and+songhai+trade In PDF document text
    • https://rizadubarezesul.weebly.com/uploads/1/3/4/4/134499036/wesutuvutuzewe.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/86297a86-2839-4535-ad42-3ee300041268/nuvunuramojajobarulel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4e8cbc-405f-4cb0-b2a5-8bb59bf0698c/10002013355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e768ff3-fdfb-4097-ac5b-1f5011c707b2/29725721443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7310/2506/files/45119382978.pdfIn PDF document text
    • https://s3.amazonaws.com/rakonezum/teen_wolf_season_3_episode_7_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8870/7738/files/and_of_clay_are_we_created_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac22592a-dbe5-404d-ac0a-6d0b0918ad54/71747869233.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/accounting_standards_list_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/33377481807.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_off00006a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A26 5272 bytes
SHA-256: 4b02c2d19582c49b42fe3d59121a4465f8d50aca100bbffc7c03d0a98b7bcbb6
font_01_sfnt_off00007be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10132 bytes
SHA-256: 8961270634e110a705eb44b460dfa61045c1f5198667ad9d3933051d3b5174f8

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