Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb6cd7b529f7a37…

MALICIOUS

PDF

33.9 KB Created: 2020-08-30 12:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510418e0978df6a010fa3c88d2d7e264 SHA-1: 40f61cbe42232f6bf82f17b7b0f557b34939c2d4 SHA-256: 3fb6cd7b529f7a377dc8385eb231d4a1b8027631e64c18792b08f1612bf9fa77
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a movie title, likely intended to trick users into clicking the malicious redirector. The presence of numerous Shopify-hosted PDF links suggests a link farm or SEO poisoning attempt to distribute the malicious content.

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.link/wix?keyword=maymunlar+cehennemini+%25C5%259Fafak+vakti+t%25C3%25BCrk%25C3%25A7e+dublaj+izle
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/39466407396.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/install_python_on_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/ragamogupawilenijaxaxa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/darksoul_coc_server.pdf
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/kakadanonoruzoleliziniv.pdf
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/9885356796.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/gepipaxigor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/kivosuvavibugekewoxok.pdf
    • https://static.usrfiles.com/ugd/934fc3_bd76e5ef244b496aa50a12b10b32c08c.pdf
    • https://static.usrfiles.com/ugd/80c1db_eeda87649db84521917fc3c527946a13.pdf
    • https://static.usrfiles.com/ugd/b8c837_86be33b931344efba0f429b74e7e9e4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e6a0c7d6fb947068017f1b6769d5c52.pdf
    • https://cdn.shopify.com/s/files/1/0439/4798/3006/files/75726787097.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/jumelozoluxuvexomagukumek.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_off00004385.bin
ceac1930dd0cb6178e9de21e810fba5eb99e175c3f954697aedcf0c0aec7bb90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4385 6128 bytes
font_01_sfnt_off00005795.bin
b9e3464ccd6f12550f00effa88c81746bd619c08755b0f220175aed6ea4c1cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5795 10164 bytes

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