Malicious PDF — malware analysis report

Static analysis result for SHA-256 918f5ce0db336bbd…

MALICIOUS

PDF

66.6 KB Created: 2020-08-22 16:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ee26bdd716f1465a084127825e88241 SHA-1: df25fd3fb2bebc20f9df2f05516f92c224b889e3 SHA-256: 918f5ce0db336bbdfedb454b1614e9241eb37f32aefb5eba8b894c93c47219ad
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a 'monthly financial report sample pdf'. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, but the primary malicious indicator is the ttraff.com redirector.

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.com/pify?keyword=monthly+financial+report+sample+pdf
    • http://files.delreystudios.com/uploads/1/3/1/3/131383838/ruduma.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/59607475110.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/arduino_programming_basics.pdf
    • https://cdn.shopify.com/s/files/1/0449/7843/8302/files/bostitch_electric_desktop_stapler_02210_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/2010/6404/files/ielts_academic_writing_paper.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/biblia_ortodoxa_romana.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/96175664636.pdf
    • https://cdn.shopify.com/s/files/1/0431/0699/2289/files/59275905391.pdf
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/bye_bye_birdie_musical_script.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5385/files/kshatriya_telugu_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/zosorodituritusotubedim.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/silejisid.pdf
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/naxixe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/ffvii_aerith_s_theme_piano_sheet_music.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_off0000bdec.bin
3619665e816ae5a7331fc6f39ad45efd7219d4a9d67a433d84d697ab22f08958		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEC 5500 bytes
font_01_sfnt_off0000d07c.bin
dd5c027cc60557e330541cb848288591e940ac1d001b7aa5dc8d2c8eb962d1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD07C 13876 bytes

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