Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0ad0d421560a5c…

MALICIOUS

PDF

48.1 KB Created: 2020-08-30 18:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8ae13743b7208a4e21d23635bd2efe5 SHA-1: 9a4c180174b074652e039b684cf03768ed03fc94 SHA-256: 2a0ad0d421560a5cfa832e5ec278d46599525807e9536f302b24923dda2bde87
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on static.usrfiles.com, suggesting a link farm or redirection strategy. The primary malicious IOC is the ttraff.ru URL, which likely leads to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=father+forgets+in+marathi
    • https://static.usrfiles.com/ugd/599026_32de19f8cab042a2b01b107ec9b4de32.pdf
    • https://static.usrfiles.com/ugd/f523c3_2262599912d34b2db5d7226b68b49527.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_7767710630d149108e4f1ba8f797ee59.pdf
    • https://static.usrfiles.com/ugd/b8c837_feea9c8c46c14084a1ed97d141a35646.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_3769ad2b3e5a4d1e81bf48cd4135b0f3.pdf
    • https://static.usrfiles.com/ugd/d99ef3_7b86e29880fe4bbbb1b9cce5efea0352.pdf
    • https://static.usrfiles.com/ugd/921909_c930d49aa5d2492fab7d3b7db67eaa39.pdf
    • https://static.usrfiles.com/ugd/05900a_77761a2735a646d79af8b5d2e1e870df.pdf
    • https://static.usrfiles.com/ugd/90423f_fbaed02e51024263aedc7bb9cd9ba003.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ba32c53e07e478bb5d9789dcc64f4a8.pdf
    • https://static.usrfiles.com/ugd/50de67_9df70e7ff49d4c0c9032f408136447f0.pdf
    • https://static.usrfiles.com/ugd/4bb894_85e789b91a1f4a63b46d530adae45eaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4e5ea3fad004ec3a29dbe9c4c9eb0f7.pdf
    • https://static.usrfiles.com/ugd/bb13a2_76ef9a331717463b8ae153d8cb37bbaa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/99008689516.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/free_online_photo_collage_maker_no.pdf
    • https://cdn.shopify.com/s/files/1/0437/4088/9240/files/91222328432.pdf
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/89177178545.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/wuzujesunogale.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_off0000607f.bin
c7a79cd1a370c60cd94ebb22df3895fa64cbb06ca24ba9a029361e0b81562084
pdf-font-stream PDF embedded font (sfnt) at offset 0x607F 5104 bytes
font_01_sfnt_off000071be.bin
d354c5f9cb9fa16883a08f975cbfd45a5a5a5b092f3db29b1bd66f4f79a88283
pdf-font-stream PDF embedded font (sfnt) at offset 0x71BE 10052 bytes
font_02_sfnt_off00009469.bin
2158bc61ad4e6564f4b9fbc3a4b6885ffc282675f9102311d2799e9cbd867644
pdf-font-stream PDF embedded font (sfnt) at offset 0x9469 9652 bytes