Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8478095d12398bd…

MALICIOUS

PDF

40.3 KB Created: 2020-08-20 00:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85af5305a580a688d6d12b759f4e7120 SHA-1: 6703fe6c852942d6214a25b352945d37d1ffafad SHA-256: f8478095d12398bd78c2515009b35cd6087c9ac9c988fdf2527ce7365824d7ee
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is presented in the document body as a 'score sheet'. The presence of a large number of external PDF links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform. The document body itself is heavily obfuscated but contains the malicious URL.

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.cc/pify?keyword=score+sheet+usa+volleyball
    • http://liran.cefmiwaynecounty.com/uploads/1/3/0/7/130740117/nosaduzowuden_kumafe_zapajovol.pdf
    • http://files.trinityau.com/uploads/1/3/0/8/130874205/6173015.pdf
    • http://files.humanehomesnc.com/uploads/1/3/1/4/131438059/wukidoje-juwimi-xosojaboj.pdf
    • http://files.dsldaquascapes.com/uploads/1/3/0/8/130814308/911504c3aed.pdf
    • http://files.adrian-werum.de/uploads/1/3/1/0/131071056/paseri.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/devuxabosuzenirodajarasis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/bruchrechnen_erklren.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9383/files/autismo_leve_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/nonisufotise.pdf
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/64013044353.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/fikovutinisigoduja.pdf
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/bhagavad_gita_chapter_17_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/zuxisafukijapimoxitefudi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6419/7273/files/ballade_pour_adeline_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/pavaniloxamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6143/files/legarozemekifibokax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/14074967722.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/pulufevavoxabeles.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/
    • https://cdn.shopify.com/s/files/1/0429/6137/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005570.bin
e2bc174cfd9f1ece0d18dc9036a69c3204f8e311bfdeabfa725b08b886857d1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5570 5292 bytes
font_01_sfnt_off0000676c.bin
d3b0567f0c955835477658307bf5ae050bfba47027afa0d812342baaf539cd70
pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 14288 bytes