Malicious PDF — malware analysis report

Static analysis result for SHA-256 2628c1fe9d5f2428…

MALICIOUS

PDF

43.0 KB Created: 2020-08-24 21:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42122e9349d4b1972dfa3aeff672987d SHA-1: f4bbdc140c61344c5426018f98b147e0fc8af39a SHA-256: 2628c1fe9d5f2428aa515a44b5023db1de0d651e20b04799405842c64931ff14
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links. One critical heuristic firing indicates a PDF link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=bell+bottom+kannada+film+song+free'. Another critical heuristic firing points to a PDF SEO link farm, with numerous links hosted on cdn.shopify.com and other domains. The document body contains garbled text but also includes the same malicious URL and several Shopify URLs, suggesting an attempt to disguise or distribute malicious content through a link farm.

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.ru/pify?keyword=bell+bottom+kannada+film+song+free
    • http://bogir.jampireproductions.com/uploads/1/3/2/8/132816202/8eff72aa78e31b.pdf
    • http://files.willockwlc.com/uploads/1/3/0/7/130740323/gigukonebu-xukuwafudolodi-rapixudalekus-dimozuj.pdf
    • http://widajufi.depthstiny.com/uploads/1/3/0/8/130814579/jajuvabegojenoj.pdf
    • http://danemalin.tmvideoproductions.com/uploads/1/3/0/7/130739561/39464.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/giwenusixapasavejipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/applied_electromagnetics_wentworth.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/grease_we_go_together.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/delegation_of_financial_power_rules_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/28642419770.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/1889222048.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/38352401483.pdf
    • https://cdn.shopify.com/s/files/1/0457/6618/1028/files/allshare_pcsw_center.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/tukiwosazumonojobinupa.pdf
    • https://cdn.shopify.com/s/files/1/0441/0467/9576/files/rofodolilafinab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/blurt_nickelodeon_movie.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_off0000643b.bin
7460c82145c79a31cc17e171be815fd64a95c4d6949aa781df4bd228f1dce648
pdf-font-stream PDF embedded font (sfnt) at offset 0x643B 5480 bytes
font_01_sfnt_off000076c8.bin
cf424a952ab0f054ca66d544cc439bcb312052d32ca41570e19248e42ca3ee5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 12620 bytes