Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8852889a2575b81…

MALICIOUS

PDF

59.6 KB Created: 2020-08-13 02:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79206ec80fe6f1c010b584f870f469c3 SHA-1: 4efe050ce586a4e63013600779f53749cdc775fe SHA-256: b8852889a2575b812f1475fd2abbbf9513b03e94422c612706d7e64691896961
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is used to lure the user into clicking, likely leading to a further stage of infection.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=artificial+intelligence+in+military+applications+pdf
    • http://nisubali.vpecc.com/uploads/1/3/2/3/132303072/tubulufosojoxep-wozux-mugudoridumedo-jebazuvuku.pdf
    • http://files.tiffanyarivera.com/uploads/1/3/1/8/131856290/61f34f80.pdf
    • http://zokeledu.seaproof.tv/uploads/1/3/1/1/131163599/3523117.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/kajuwadelesozapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/natevuvavapukixexeti.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/difinebasigesosekimix.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/partidos_politicos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/99376152244.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/21235239972.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/nixafemewo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1630/5312/files/rekuviruxiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/13292700548.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/applied_econometrics_with_r_kleiber.pdf
    • https://cdn.shopify.com/s/files/1/0435/5584/8355/files/73812771044.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_off0000aaad.bin
33f338d935c7aab6b409d4712ec71508995bec7a405384f5d9b6ef6399c87c65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAD 5564 bytes
font_01_sfnt_off0000bd7d.bin
a46abc260c62360992888ca26946bdc797e1cff6b7c82c6731657285b8e567a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7D 10500 bytes

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