Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93c0d53eb116553…

MALICIOUS

PDF

43.2 KB Created: 2020-09-02 08:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39278ab3f214cc46cf55545e8c40d58b SHA-1: 76aa312b4dc30e6055617cdd5bc139ae2b4a4c0b SHA-256: f93c0d53eb11655387e89c697134ce474fee2881494dff4c92009b9ff784c424
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=canon+2900+printer+drivers+free'. This URL is likely used to deliver a secondary payload. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to other documents, some hosted on Shopify. The presence of a 'download button' heuristic further suggests a social engineering attempt to trick the user into clicking malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=canon+2900+printer+drivers+free
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/anti_inflammatory_activity_of_medicinal_plants.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/the_virginia_and_kentucky_resolutions_argued_that.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/zinufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0459/7055/5047/files/nizugovopazuzegaburivi.pdf
    • https://static.usrfiles.com/ugd/c345b0_bb318e087596424b97fa6dd2fafcd383.pdf
    • https://static.usrfiles.com/ugd/3c9ac1_7cee08c4f237469e89c4c5ac96d69cc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cff675cc254f44c1bde6a67e3e295c02.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/tudof.pdf
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/havana_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0447/0043/4586/files/hit_me_baby_one_more_time_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/16170533508.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1474/files/acca_p4_syllabus_2019.pdf
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/33932367912.pdf
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/mimamebixerazuwome.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/4558674419.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/nitewixoluvip.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_off000069dd.bin
4c6b200fb273346f13a6a90217fcd5ca4a71b1d16bdcc1bbc3338711b3b1b05a
pdf-font-stream PDF embedded font (sfnt) at offset 0x69DD 5396 bytes
font_01_sfnt_off00007c4c.bin
1df9224b84f2cd56d333373db940ef661130dc56478d3f56c25703d8671e96f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4C 10616 bytes