Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2f154ca6f23e57…

MALICIOUS

PDF

37.1 KB Created: 2020-08-30 19:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: add73729b134d30207e259a055b5e5d0 SHA-1: 43fff19e515926063dac81d43c6be456250eeefd SHA-256: 1d2f154ca6f23e573e876c9f131625b96f1b3f40c864e753530d5c8e6a10c140
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=creepypasta+karakter+listesi
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/import_elvui_profile.pdf
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/29891782257.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/sujawefifopefavikotomifi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/apsrtc_bus_pass_online_application.pdf
    • https://cdn.shopify.com/s/files/1/0434/4777/9494/files/morph_mod_1._8._9.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/bosozixajikukefopexi.pdf
    • https://static.usrfiles.com/ugd/7f16bd_339c1b8c492242878c0236dee02c9266.pdf
    • https://static.usrfiles.com/ugd/451461_0f5870f08e974ce5baeaaee8cf72fc35.pdf
    • https://static.usrfiles.com/ugd/b914b5_4db77fa606c34437afc7e3a6435baf99.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bb815f7052643ddb9520f07d89f548e.pdf
    • https://static.usrfiles.com/ugd/a2e20a_b31edbf389b24bf290d4252c67defc3e.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005542.bin
90dd56f2f1788cf256e34937ce1138de02fc6d7d5b9dac88904589d4a255c1ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5542 4884 bytes
font_01_sfnt_off000065ee.bin
544cbdd8a66774b0e4cc89579d8bf07e2af2d94900bd6e04826a93062c29f405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 10016 bytes

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