Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a2009893218d3c…

MALICIOUS

PDF

42.3 KB Created: 2020-10-12 02:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9fafa44ce91a4f0f113da5603f6c5220 SHA-1: bc2a6dc16f5abb2ad38b9ab752d60b9c63a2abca SHA-256: 46a2009893218d3c267cb28cb4aa332b8bbf37c4f6b8b60b42525d93cabd4a90
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://cctraff.ru/pify?keyword=rev+it+up+firework', which is also flagged as malicious. This suggests the primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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://cctraff.ru/pify?keyword=rev+it+up+firework In PDF document text
    • http://xoriz.progettiarduino.com/uploads/1/3/0/7/130776088/dovawovudot.pdfIn PDF document text
    • http://files.bethelurcaylmer.com/uploads/1/3/1/1/131164125/kirewuguraxe-mifokurusati-gavagodez.pdfIn PDF document text
    • https://site-1037843.mozfiles.com/files/1037843/65008695923.pdfIn PDF document text
    • https://site-1037189.mozfiles.com/files/1037189/riwesijaporod.pdfIn PDF document text
    • https://site-1041677.mozfiles.com/files/1041677/vujazavojepisabupigaz.pdfIn PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/jidif.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/cac40d01-1590-4c97-aca7-d7184c1aa369/devotokirogumileba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ffc21a-d2af-48a7-b0b3-17f3fd7a9a38/86614307662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f65b678e-1440-4500-86e5-62233cd3d01c/metolopisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53e8dac-3a8f-42d6-9c15-71499dc02abb/19480029849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9884710f-2062-4e16-acb0-463e6e0f1180/64046374018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd33f0d-e46a-4fbe-ba66-1a33dd110c14/38934618690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374af6d6-1a87-4d49-8ba1-393b40f840e7/98078192473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58bbedf9-a060-4de1-ac3c-4c9e15181e5e/80815303182.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_off00006865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6865 4700 bytes
SHA-256: 6b154b60b419b3d5024c5112c469d99a3fc08ad73886f47da9a775b421929cdc
font_01_sfnt_off00007899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7899 10608 bytes
SHA-256: 98f97aae0f33d9ea54fb028fc4cbf447417fefeb49dd00350cd4290afa5ba719

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