Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57a825aa5bb4e64…

MALICIOUS

PDF

34.2 KB Created: 2020-09-09 05:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bef6592eeeb1c52e42ac975c41d68c6 SHA-1: de155c0726bc92283aa1f22883ff600a075d47aa SHA-256: b57a825aa5bb4e64ef9cdd9c0e81bb57774c7e4ad0bbe95f033ed30a7a02743f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.club', identified as a malicious redirector. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role in the attack. No scripts were extracted from this sample.

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.club/wix?keyword=weather+report+roswell+georgia
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/98766671033.pdf
    • https://cdn.shopify.com/s/files/1/0429/0111/0940/files/bikexufomofavakifopobux.pdf
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/definite_and_indefinite_articles_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3651/files/kulogi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5402/3327/files/80884369706.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/17158106963.pdf
    • https://cdn.shopify.com/s/files/1/0435/1721/4874/files/aa_aashiqui_mein_teri_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/management_accountant_job_description_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pitoparejiki.pdf
    • https://static.usrfiles.com/ugd/d4da64_22ed8ac1ba874a19b38a695f88ae9112.pdf
    • https://static.usrfiles.com/ugd/26481d_c470a93e55594ae0bc9b4935593acade.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_off0000491a.bin
e419322e480d2f0c7e7bb9aa45b3b9bcb97dd5f5cd9bc32180f3f952660df4eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x491A 5188 bytes
font_01_sfnt_off00005ad1.bin
a207d48eb438c8ec8290294a092d1d34ae5ad4682c1dbdafeb146838316e4a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD1 9848 bytes

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