Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0c79e92e15c09a…

MALICIOUS

PDF

56.4 KB Created: 2020-08-31 07:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 507c8545b60c8dd729ea3b6f155497e5 SHA-1: ef4cdcedbf9390886ec1a06500c574725c6229de SHA-256: 9f0c79e92e15c09a7ac86997817561e2210093df30e5898f5d6bd10924d9d284
120 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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The PDF also contains a large number of external links, many hosted on 'cdn.shopify.com', which is flagged as a link farm. This indicates a likely attempt to drive traffic to malicious infrastructure under the guise of providing downloadable 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.cc/wix?keyword=james+stewart+calculus+8th+edition+pdf+download
    • https://thepiratebays3.com/search?q=james+stewart+calculus+8th+edition+pdf
    • https://thekat.info
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/hunger_games_vk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/attaching_plastic_sheeting_to_wood.pdf
    • https://cdn.shopify.com/s/files/1/0456/4464/4519/files/oracle_fusion_intercompany_reconciliation_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/world_of_warships_destroyer_guide_2019.pdf
    • https://static.usrfiles.com/ugd/b42fd6_6d82978c5e4e4b4e99ddfc86fb6aee6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2f34cd483544153a5171f0f43347676.pdf
    • https://static.usrfiles.com/ugd/906e9f_b3cb9950112c46898038960bee2877c3.pdf
    • https://static.usrfiles.com/ugd/af0aa9_81e09d7bab06472f90ea73c24e6a2802.pdf
    • https://static.usrfiles.com/ugd/289c5e_61db220a52e742ab95b603ddb7459c5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fb24b56143f48fe9235d6d03ba7d6b2.pdf
    • https://static.usrfiles.com/ugd/a382ee_762b1bbdfe73495b9bad585796783b23.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/86395294613.pdf
    • https://cdn.shopify.com/s/files/1/0431/2304/8609/files/fundamentals_of_mathematical_statistics_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5419/5097/files/warframe_redeemer_prime_build.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/pisamuxipepena.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/44131446561.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085b3.bin
d49a83977d174bc16e855a2d6d12d7e98a7670d0f998cd11c12bb152c7b31676
pdf-font-stream PDF embedded font (sfnt) at offset 0x85B3 5672 bytes
font_01_sfnt_off000098e1.bin
49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
pdf-font-stream PDF embedded font (sfnt) at offset 0x98E1 2116 bytes
font_02_sfnt_off0000a2ac.bin
f08e0c6949265796835cf9e9a92002619c6bc2cfeeb1554e3bb6846730b7e2e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AC 15896 bytes