Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4ffd3338bb3dde…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 23:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cfe7ac1172c06cbd97482959181c469 SHA-1: ec922cd6179c9eedc3a6d478aba5475674e62224 SHA-256: ba4ffd3338bb3dde11be2e17a6a4a721f90ce8f9867116dfbe7337fe8887a623
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to shopify.com domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is ttraff.ru, which is used to redirect users to further malicious sites, likely for phishing or malware delivery.

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=afghanistan+a+military+history+pdf
    • http://files.victoriagrayphotography.com/uploads/1/3/1/3/131398140/pimabareparumix.pdf
    • http://files.jamie-carl-design.com/uploads/1/3/1/3/131381542/fezeb.pdf
    • http://files.clevelandchamberchoir.org/uploads/1/3/0/9/130969678/vafekexusu_wobigeb_vixut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68906731860.pdf
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/64986745404.pdf
    • https://cdn.shopify.com/s/files/1/0451/2625/4745/files/el_enlace_covalente.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/99119297308.pdf
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/soropomesolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/dudulenagoxedoni.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/wogozitekigu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/29628468210.pdf
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/half_life_questions_and_answers_physics.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/zakupinekorepixuzuderodok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/54999695778.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/merge_branch_into_master.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/pdf_annotation_app_mac.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_off0000737f.bin
ead169c071ee5c80d51252848638f642139ec34f88bc0f4dd5d8f34358108da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 5544 bytes
font_01_sfnt_off0000862d.bin
5888c90d5b12181c40a601686e43b557e26e83880cc789f8fefbdbe3a341e042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x862D 10040 bytes

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