Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ec86d41b35c5e9…

MALICIOUS

PDF

39.4 KB Created: 2020-08-31 07:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51925beb4a4bdb953fa8064a2cc41f53 SHA-1: 58adad2ce3cf21b1d59d9f40977a05cb0f28bc1c SHA-256: 55ec86d41b35c5e9a0ee9a5b404f05fcd504657248c8fd3c82fe1e1ccd5164ad
120 Risk Score

Malware Insights

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

The PDF file was flagged as a malicious redirector and contains a mass external PDF link farm. The primary malicious URL, https://ttraff.com/wix?keyword=toujours+et+jamais+poesie, is a known redirector. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a potential SEO poisoning or link farm tactic to obscure the malicious destination. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/wix?keyword=toujours+et+jamais+poesie
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/ajcc_thyroid_cancer_staging.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/42564103459.pdf
    • https://cdn.shopify.com/s/files/1/0447/1295/1961/files/margaret_runyan_castaneda.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/best_offline_android_games_with_high_graphics.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/word_list_with_synonyms_and_antonyms.pdf
    • https://static.usrfiles.com/ugd/66c878_7e165ed98aa041d1a1e599d9a7edf1a1.pdf
    • https://static.usrfiles.com/ugd/74c34a_d2c6205242104d84aee5030f9244d996.pdf
    • https://static.usrfiles.com/ugd/738632_d2de388131c7450eac1a01d227bc3a3c.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_61db6b49e49b4ab3a6fac6f57b492ff5.pdf
    • https://cdn.shopify.com/s/files/1/0433/1601/9355/files/7274321612.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/antrag_schwerbehindertenausweis_hessen.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/tegakev.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/vuzinujawufitavuzuve.pdf
    • https://cdn.shopify.com/s/files/1/0447/9965/6087/files/ethical_issues_in_social_work_research.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/bumizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5143/3627/files/xajulon.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/64023084223.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e25.bin
6f9c298757cdb874ca2f0eb07f7620f1d766812aa1f99cca3b15ce53cbe10f3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E25 4736 bytes
font_01_sfnt_off00005e46.bin
6a30cd7e2873495585dd4fec11283421aeedf67d80a24b3fa13c5fe9c1a8d324
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 11012 bytes
font_02_sfnt_off00008140.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8140 4324 bytes