Malicious PDF — malware analysis report

Static analysis result for SHA-256 3491aa0b78ca4301…

MALICIOUS

PDF

48.3 KB Created: 2020-08-09 22:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88cb96feed36dbc64b891d548c271ac4 SHA-1: 2bfe8017811d2a4c1867e5bf099502894d97e2cf SHA-256: 3491aa0b78ca4301c1ff8dc24b1f20640a1876e7d1ef282e5f773b31a27703e7
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with a keyword related to educational materials. The document also features a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The primary malicious link is https://ttraff.com/pify?keyword=70+question+bubble+answer+sheet+pdf, which likely leads to a further malicious destination.

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=70+question+bubble+answer+sheet+pdf
    • http://files.mannahomesne.com/uploads/1/3/1/3/131383297/wenilem_bumilejabo_furotuje_gokakaxumezuz.pdf
    • http://tatira.theyogaterminal.co.uk/uploads/1/3/1/4/131453870/0f1eeb.pdf
    • http://pivirig.aimeeswenson.net/uploads/1/3/0/9/130969472/3963824.pdf
    • http://files.iamuinformer.org/uploads/1/3/1/4/131453198/cf1a7b941.pdf
    • http://moxifoluw.tomballmemorialcheer.com/uploads/1/3/1/0/131070722/6d8c89d8a2ccc.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/mathematical_symbols_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/9349/0838/files/can_t_find_header_files_for_ruby.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/50358208848.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/sapukejenodezevugotonuma.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/javascript_order_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/excuse_me_kevin_gates_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/sotovimegunusopusanep.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/29550225724.pdf
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/lunejuxovexavega.pdf
    • https://cdn.shopify.com/s/files/1/0439/9611/9198/files/68191354667.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/fajagejodux.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000578e.bin
fd7f77da20cd1c6244178e94eb93bf472c90d2311f4ed62f46a57cbcd9f7631d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x578E 5496 bytes
font_01_sfnt_off00006a30.bin
9e2707f35c5cc44b6556b8586df73b150d618c101e0f858db2c28ecb25358907		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A30 11268 bytes
font_02_sfnt_off00009091.bin
9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9091 16160 bytes
font_03_sfnt_off0000a597.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 4324 bytes

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