Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ffaf145a02109e…

MALICIOUS

PDF

54.2 KB Created: 2020-08-17 05:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e79db71fbf137ffe8cacde514541519 SHA-1: 77d63acd34f9cf63ac80468634a71486b1dcfe67 SHA-256: 75ffaf145a02109ec5d34987aaab0dfcc123cc1e5dce2dcf481e9e33ad573170
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 pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility. No scripts were extracted, and the PDF structure itself does not indicate specific exploitation techniques beyond redirection.

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=negative+feedback+after+interview+template
    • http://files.wolfegranite.com/uploads/1/3/0/7/130775432/487561.pdf
    • http://files.wolfegrani
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/zibodatuboziperogifep.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/78144415721.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/nozenedenuwakubafoxisu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/box_and_whisker_plot_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/65567372398.pdf
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/wofiwewedevurelawedowi.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/bmtc_bus_pass_form_2018-_19.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/24973340919.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/17684850173.pdf
    • https://cdn.shopify.com/s/files/1/0431/9513/8208/files/perranporth_surf_report.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007088.bin
b5b6c03525c309148b4176559fda2996a71258115ef607a8c0772d32e0212f59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 5620 bytes
font_01_sfnt_off000083a8.bin
864daf3033731e10e2f50a3f4d739a69d3941301969a19f16c7157930cc32cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A8 3492 bytes
font_02_sfnt_off0000917f.bin
40577b7667cf6b581e33aae28f89510c58a908f4243a8ef53373b5c32b210ec3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x917F 10432 bytes
font_03_sfnt_off0000b55b.bin
1cbb36bb7b1d233ee9f5c2cce214d5b3269f5c1575f9f3c623519b72eb7db796		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB55B 16240 bytes

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