Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd74095fdad08f47…

MALICIOUS

PDF

45.3 KB Created: 2020-08-07 09:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1dbf6ca1fdc44a5b1086d6fe3fc4fff8 SHA-1: 714ce57340f156bbd0b2e71355a6f435d8fc5365 SHA-256: dd74095fdad08f471b8d1e218577b296efa79c9a0ae0a7f0fee1e5a249865588
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, indicating it's the primary lure. The presence of numerous external links and the redirection to a known malicious domain strongly suggest a phishing or malware distribution attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=liste+adjectif+anglais+ordre+alphabetique+pdf
    • http://files.indestructiblekeychain.com/uploads/1/3/0/7/130738779/xulevomufigosumeb.pdf
    • http://files.poiseaussies.com/uploads/1/3/0/8/130874110/wajededuwuv.pdf
    • http://files.dakotadrywallnw.com/uploads/1/3/2/7/132711966/xirovomufinevi.pdf
    • http://files.dilodging.com/uploads/1/3/2/6/132695575/5fe7355f572384.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/waving_hand_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/30206054278.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/55879329354.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/79305905510.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/fewevimajifinusivos.pdf
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/luwasokokuwir.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/67974108292.pdf
    • https://cdn.shopify.com/s/files/1/0440/6080/3237/files/bienestar_socioafectivo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/88084348597.pdf
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/24275932916.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_off00006817.bin
aca255f66d64d1d7aa22da9ba8f7bedc2b7c9bb410a6e4ffe77c8721428be9b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6817 5700 bytes
font_01_sfnt_off00007b74.bin
ed748ca6c2f492e73d265525bc6d472680339fd231ba2aaa927a8161e137fc2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 13928 bytes