Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d0226ddb50e156…

MALICIOUS

PDF

57.3 KB Created: 2020-08-30 17:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d26d5f140381913e904e5eeee7556635 SHA-1: 1e33b58cfa946684aa9ca2f13faa8560ceff9593 SHA-256: 29d0226ddb50e1566627a06a8e3602cc34106f9bc4bea327a04bd01aaaa62d71
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains text that appears to be related to 'Pathfinder roleplaying game advanced', likely serving as a lure. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm or content distribution strategy.

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/wix?keyword=pathfinder+roleplaying+game+advanced
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/kupesobusodiwanojuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7241/2055/files/67526399161.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/xukajobubis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7175/6698/files/dijowozatatorojaxeruxav.pdf
    • https://cdn.shopify.com/s/files/1/0437/9613/6097/files/ziraduzef.pdf
    • https://cdn.shopify.com/s/files/1/0464/5784/7976/files/compuestos_aromaticos_nomenclatura.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/mobugumegarokilupovadajis.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/89582802440.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/sufujaxuzaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/pepoxanos.pdf
    • https://static.usrfiles.com/ugd/6908d7_816a9b09c0b246ec92d1443730891e7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c007da6a7b64c88bcc7eec1e8e10446.pdf
    • https://static.usrfiles.com/ugd/e33828_0221af075e114034bb2c98294a0846aa.pdf
    • https://static.usrfiles.com/ugd/0a052f_88aebe892a1142d0a913c50ace25d9a8.pdf
    • https://static.usrfiles.com/ugd/d55797_2cb1b402b1664173a899b18da64290ff.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a10e.bin
72b2ea25289b698b38447ff29fd83300b5703f4f763932153e11ca7728b3da84
pdf-font-stream PDF embedded font (sfnt) at offset 0xA10E 5556 bytes
font_01_sfnt_off0000b3d0.bin
5c8d0587cf3523888d7c3795b1201831c29645f54ae41bfc05d82b4b80643b60
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D0 10632 bytes