Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d260fc962281a2a…

MALICIOUS

PDF

46.9 KB Created: 2020-08-08 07:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f560f59c395cb40896fab2424b08e54 SHA-1: 4b8e8049d6d72ba0fd705921cc38e391bd34e47e SHA-256: 9d260fc962281a2aa5ff0cda8b8864dd534a5233a229cc6d72d642727c7a3038
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=absorcion+de+calcio+pdf', redirects to known malicious infrastructure. This suggests a link farm or redirection tactic to obscure the ultimate destination or to engage in SEO poisoning for malicious purposes.

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=absorcion+de+calcio+pdf
    • http://files.peterkramerarchitect.com/uploads/1/3/1/3/131381799/sitelovabetu.pdf
    • http://files.bnbfloors.com/uploads/1/3/1/8/131856353/dezanuwegiwegep.pdf
    • http://files.sarahcbenjamin.com/uploads/1/3/0/8/130874012/kitatasar.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/zotewukoduxezipujujop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/41252414583.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/65378204548.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/supply_chain_management_strategy_planning_and_operation_chopra.pdf
    • https://cdn.shopify.com/s/files/1/0434/8031/8118/files/16874461475.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/tics_en_el_ambito_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/50186516504.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/pinitevinezot.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/51109962722.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/38869940788.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_off0000610c.bin
d5af8991b408af49a79e694d6bbcba6858882bf93bb130a67a4b7521cf72a173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 5276 bytes
font_01_sfnt_off00007305.bin
0739df80e6ddff234dfc8a01af28a6d5ce28ad5aa953f817b1169e5ee9092913		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 11516 bytes
font_02_sfnt_off000098a4.bin
ff25e7f6a43f1b59442a35e56bc56f3cfd2cff6193593d34390440b8d778df35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98A4 16076 bytes

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