Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f99ec67bd8ab4f0…

MALICIOUS

PDF

62.5 KB Created: 2020-09-01 08:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ebd23f2183e7b492e07ac9d8bc1a876 SHA-1: 263e489f138453eea4e2442a29fff71466804217 SHA-256: 1f99ec67bd8ab4f08434a640188b72dc4a2196acba5f39f9d68fd4f73722e357
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=comment+apprendre+l%2527+anglais+facilement+pdf'. This URL is presented within the document body, disguised as a PDF about learning English. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to drive traffic to the malicious redirector. 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.ru/wix?keyword=comment+apprendre+l%2527+anglais+facilement+pdf
    • https://static.usrfiles.com/ugd/affb4a_4b237987eebc446da57eb2d2338a6435.pdf
    • https://static.usrfiles.com/ugd/d5415a_0cf3a5b657304c71bd3c542855a91c75.pdf
    • https://static.usrfiles.com/ugd/a2d007_faef7a201c46425e9b3bbd1f47b2f416.pdf
    • https://static.usrfiles.com/ugd/2ca09c_331e84a7dbff4e71820573e759816687.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/godejewudetekokejafovex.pdf
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/house_chores_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/lusukumotasunawikuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/vijununinagomasafen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0487/files/bitufifipikij.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/vegezifawipipirepowexoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/51821904497.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000928b.bin
155b5997c6410f3c67826cfe79dc6fc7ec7f34e33f067afc6860ac752a93d9ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x928B 5416 bytes
font_01_sfnt_off0000a4db.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DB 1800 bytes
font_02_sfnt_off0000ad69.bin
98600ab306f9d398e054646d4327d9aae81c414c3085096a6e625481ad9ecbb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD69 12744 bytes
font_03_sfnt_off0000d4b3.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B3 16312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.