Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba19e98082d6169…

MALICIOUS

PDF

49.7 KB Created: 2020-08-30 18:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42a825c178a6002bd1c7217a816fe282 SHA-1: a56d14995ede4111c40c07f75354b0550160980f SHA-256: 2ba19e98082d6169c4933f9d88f9afc8a4da5fc4d3e629568d4e7fa3f6d08baf
120 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 'https://ttraff.cc/wix?keyword=2018+tamil+monthly+calendar+pdf'. This URL is presented within the document body, disguised as a calendar link, to entice users to click. The file also contains a large number of embedded URLs, many of which point to Shopify, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the primary malicious action appears to be redirection to a potentially harmful site.

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/wix?keyword=2018+tamil+monthly+calendar+pdf
    • https://cdn.shopify.com/s/files/1/0431/1118/6588/files/catiline_orations.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/things_to_do_in_new_buffalo_michigan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/1466323639.pdf
    • https://cdn.shopify.com/s/files/1/0463/1029/3669/files/mokona.pdf
    • https://cdn.shopify.com/s/files/1/0432/1784/6427/files/fopizegozemuguku.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/xokadukaluv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/99483974283.pdf
    • https://cdn.shopify.com/s/files/1/0449/0277/6999/files/zinetijelojiwabola.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0335/files/speak_english_podcast_com_004.pdf
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/bexikazopevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/litujekana.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/69428440042.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dbb8c5f67c64c6e89d56df9f1fa27d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c6cbe1d631246d2b27c5c00f0925dff.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_off0000639a.bin
21a3f00d2b901954c0271b1d22f31a2346cb98be712ec37608c015daff1756f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 5744 bytes
font_01_sfnt_off000076ec.bin
255ad0d44983127208b2e2030df7951b2c6e703689d9089d124df17eaf729bee
pdf-font-stream PDF embedded font (sfnt) at offset 0x76EC 7328 bytes
font_02_sfnt_off00008ca9.bin
17ae4278257ee680e8011634e184b0030f93b7ef2058dd938cab27a4999198ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA9 14156 bytes