Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d36f339ba97331…

MALICIOUS

PDF

48.8 KB Created: 2020-08-20 04:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 680608a430e827642bcf8b232c6545d2 SHA-1: dc613b5dee0336ad350b7417020eee64fbdc81bc SHA-256: 32d36f339ba97331abe609c9046be8646eb14ffd0b985a6a1dbaab070e36206b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=evolution+of+computer+programming+languages+pdf'. This URL is embedded within the document's text, suggesting an attempt to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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=evolution+of+computer+programming+languages+pdf
    • http://files.tender4life-project.org/uploads/1/3/1/6/131637308/45a0f578.pdf
    • http://zupegu.goldenpiscesphotography.com/uploads/1/3/1/3/131383314/7627519.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5041/files/anemia_por_deficincia_de_vitamina_b12.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/borotivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/estandares_de_calidad_ambiental.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/verotakemofosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/72560681262.pdf
    • https://cdn.shopify.com/s/files/1/0433/5960/0798/files/kekidosi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/32732560719.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/trap_house_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/66691753604.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_off00007efa.bin
e1d65f9eff7afebe2c588faad024de9c56f6c90589673f37161d654330f0a12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFA 5492 bytes
font_01_sfnt_off00009198.bin
141409d1d4a0e3a1c0f1b5bf4ab413a4ced834fc25a67ea4751efc1c1ed7a78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9198 10576 bytes

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