Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc45f60e71b1ac16…

MALICIOUS

PDF

47.3 KB Created: 2020-08-11 15:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96927da22cc432e6ab050b2910d345fa SHA-1: a6bfe1949792812be215527e422de44c42ded106 SHA-256: bc45f60e71b1ac1674b3559b817974934bcf2c9d08a05dea9a0e94714831c10c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=alcoholismo+pdf+tesis, which is presented as a link to a PDF tesis on alcoholism. The document body is heavily obfuscated but contains the malicious URL and references to wkhtmltopdf, suggesting it was generated programmatically to host these links. The presence of many Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic.

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=alcoholismo+pdf+tesis
    • http://files.stjohnthebaptistdeanery.com/uploads/1/3/1/0/131070560/6a52328b.pdf
    • http://files.metalexpressions.com/uploads/1/3/0/9/130969525/4140703.pdf
    • http://files.ge-solutions.ca/uploads/1/3/0/8/130874495/4310176.pdf
    • http://gixura.tubaphonium.com/uploads/1/3/1/4/131407089/3643128.pdf
    • https://cdn.shopify.com/s/files/1/0437/3741/5829/files/10_act_practice_tests_mcgraw_hill.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/masivilirowufuregipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/dured.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/orange_prism_ioun_stone.pdf
    • https://cdn.shopify.com/s/files/1/0434/5200/6552/files/1531435691.pdf
    • https://cdn.shopify.com/s/files/1/0436/8377/4614/files/lobamixexet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/nigavabixatabin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/simple_cake_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/fikapobugexasujogasamobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/65985180591.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/user_acceptance_testing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/33848420734.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_off00007bb1.bin
c0966042fee9f5710799c6fcc4ad2c42fba62fbe23ab983853de90ef21821fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 5080 bytes
font_01_sfnt_off00008cd2.bin
fdf90f8265e67bb8b0b170200c9d0cd694155079d2b2852bdb8a661be8e28789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD2 10532 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.