Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49b6b1f2ca97612…

MALICIOUS

PDF

46.2 KB Created: 2020-08-16 22:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4283328092bd316e7e85ecb295cbf13d SHA-1: 3899e7586e5c31c2edc43c7a0a8b8dcf5f19e9e9 SHA-256: d49b6b1f2ca97612bb9c9fd37a5c31f1466eb7636b35ff78b1a4273da8faa7a1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm, with one critical link pointing to a known malicious redirector at `ttraff.cc`. The document body, though heavily obfuscated, contains the same text as the malicious URL's keyword parameter, suggesting a lure for search engine optimization or social engineering. The presence of numerous links to Shopify-hosted PDFs indicates a pattern of distributing malicious content through seemingly benign file-sharing services.

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.cc/pify?keyword=hard+6th+grade+science+questions+and+answers
    • http://files.heartsoultours.com/uploads/1/3/0/7/130775017/ab5a6.pdf
    • https://cdn.shopify.com/s/files/1/0438/5469/2512/files/mmd_pmx_editor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/14549727405.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/lasonunilasivadujaten.pdf
    • https://cdn.shopify.com/s/files/1/0433/2165/5464/files/time_of_troubles_forgotten_realms.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7957/files/bls_aha_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8757/files/retorika_at_balarila.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/anatomy_trains_myofasziale_leitbahnen_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5868/2273/files/bacteriologia_veterinaria_libros.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/30532757741.pdf
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/lomirifabosejisifufap.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/entrepreneurship_development_course.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_off00006ae4.bin
1b099014cc3863bbcc1865f8c4f12a0bb587e8cc41891279e29d3e03b82036fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE4 5384 bytes
font_01_sfnt_off00007d2f.bin
7450056c955f4727433e6677c696724347366c09f384f0cee8a559a2ddc69ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2F 9364 bytes
font_02_sfnt_off00009d1f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D1F 4324 bytes

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