Malicious PDF — malware analysis report

Static analysis result for SHA-256 6309406050c86312…

MALICIOUS

PDF

57.8 KB Created: 2020-11-09 06:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e044d1b4895a945a46b3282e481ccdd6 SHA-1: 14de60f74d2a257e334c74993a772907a7be1653 SHA-256: 6309406050c8631282bf3ef823cdca1435499514df5f94eaddee63919a7169f5
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, https://trafftec.ru/123?keyword=giant+steps+john+coltrane+pdf, is flagged as unknown reputation. The ML classifier also strongly indicated maliciousness. This suggests the document is part of a link farm or SEO poisoning campaign, potentially leading users to malicious sites or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafftec.ru/123?keyword=giant+steps+john+coltrane+pdf
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/f6b90c97.pdf
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/63fb1f.pdf
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/wujunumetesafe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f8b9c2fe-567f-46c4-b60b-63f301aebcac/dark_souls_manus.pdf
    • https://uploads.strikinglycdn.com/files/ca5e8685-105f-4594-b27a-33cbf989358a/ximuvelasugubuxaxowuta.pdf
    • https://motulod.files.wordpress.com/2020/11/tiwoloza.pdf
    • https://uploads.strikinglycdn.com/files/674dff09-d695-4626-9722-3790a520bb1a/ditezules.pdf
    • https://felibule.files.wordpress.com/2020/11/povunikilelivu.pdf
    • https://uploads.strikinglycdn.com/files/106c6631-78b2-4189-ba6a-437186f5a083/kanilumuz.pdf
    • https://uploads.strikinglycdn.com/files/cbf8ba6e-da5c-4760-b22d-962ef1277500/xojasokep.pdf
    • https://uploads.strikinglycdn.com/files/bf5afa6c-73f6-47ec-a967-e2c8e68fcba0/tuvufuduzabunige.pdf
    • https://uploads.strikinglycdn.com/files/00ccde7a-511a-41a3-aa79-0b9e503ebcdf/for_honor_aramusha_op.pdf
    • https://uploads.strikinglycdn.com/files/8bdffb7d-672f-48a9-a952-059e73017a3e/what_is_the_matter_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/269dcf96-a682-459b-94fc-d8ed697624c8/divamokokovefawujaguno.pdf
    • https://uploads.strikinglycdn.com/files/5cc06b09-6899-42f9-a359-682ec60607a0/jiguzomekaxisemewagega.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000b596.bin
c7a4eca0ed997785826b2de04797f5ac6a1b705fe0b704009a2504f07d2b2ad0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB596 21460 bytes
font_00_sfnt_off00006c9e.bin
7021b201b610a4f5f60b251264cfd096b82459901941796d0bbecce616bd4c09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9E 5260 bytes
font_01_sfnt_off00007ee0.bin
3ae16b3ac236746eb50c22a8bddd739d88364b63ce711dd25f358b57dc2e4059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE0 5352 bytes
font_02_sfnt_off00009118.bin
2cfe179962166d74c3cd9e5e894b6c26d595b92a364ac248f10a99f9c1cea6c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9118 10580 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.