Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f07cf4fef1594d…

MALICIOUS

PDF

44.6 KB Created: 2020-08-20 20:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90adadf961fda56d6ce1be07132696ff SHA-1: 953e9161bdfb58a70e96398695aac3161dde135c SHA-256: c0f07cf4fef1594ddbcbff0fa4b918a37ec7f6e5c91f5a8a7a39992bc1b90b1a
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, pointing to 'https://ttraff.com/pify?keyword=julien+baker+hurt+less+piano+sheet+music'. This URL is presented within the document body, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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.com/pify?keyword=julien+baker+hurt+less+piano+sheet+music
    • http://files.partnersinhopeusa.org/uploads/1/3/0/7/130739234/gilaberix.pdf
    • http://files.traillandassociates.com/uploads/1/3/1/6/131637177/xijejexijob-bilevokaposo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/46053156200.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/crack_idm_6._28.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/49669506865.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/chipmunks_sinhala_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8031/0174/files/27940114042.pdf
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/balanitis_irritativa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/duroj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1123/files/78470181440.pdf
    • https://cdn.shopify.com/s/files/1/0437/7339/5106/files/dungeon_siege_2_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/benim_hocam_fizik_ders_notlar.pdf
    • https://cdn.shopify.com/s/files/1/0439/9605/3662/files/87487124478.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/nationalism_in_europe_class_10_notes_download.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_off0000704f.bin
b13dbfc2b4b31cbf03acac050e7c5a9c9bc328281d833b66948a5b6c023cfe06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 5368 bytes
font_01_sfnt_off0000825e.bin
d13762fdedca6f0de01e4b8dbca814af23c2af4249080b7b5695b6346a6128b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825E 10204 bytes

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