Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3e5f2cf9a4e91c…

MALICIOUS

PDF

41.2 KB Created: 2020-09-18 15:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f5f00b2a3a37c8170f33c6cb4f81e89 SHA-1: aaced4bd8a2841d0815c7df42cf54936c09d2d67 SHA-256: 8b3e5f2cf9a4e91cf15a87ae815fc6e8329d89acefca778424386f56ff514ed2
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 'https://ttraff.club/wix?keyword=titan+quest+summoner+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting PDF files. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the document's primary purpose is to lure users to a malicious site, likely for phishing or a scam, under the guise of providing a guide.

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.club/wix?keyword=titan+quest+summoner+guide
    • http://mubepime.wpea.org/uploads/1/3/1/1/131164021/1993826.pdf
    • http://pifepe.freerangeworship.com/uploads/1/3/1/1/131164021/af38be1e452b6.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/82440566279.pdf
    • https://cdn.shopify.com/s/files/1/0430/8107/2789/files/9900959542.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/gitip.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/fezutugavesakatod.pdf
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/gomoxafifakezi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4224/2709/files/pokemon_explorers_of_sky_aura_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/baidu_er_script_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/viwasa.pdf
    • https://ad1fbeb6-c5fa-4498-9667-4dda32a7f3dc.filesusr.com/ugd/4b874d_68a25bf2710042e79b40953b984ddd65.pdf?index=true
    • https://d3816aea-ae43-45a9-90ae-47ee24af39e3.filesusr.com/ugd/02ccf7_3a16427d03144169a83c02e535ff61c6.pdf?index=true
    • 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_off0000639e.bin
f6ed03ecd128bd78066275d9e52f967a0d84df217f3c54bd5b70c7487de322d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 5188 bytes
font_01_sfnt_off00007526.bin
53b30339d1f5ab13a3aec8be9a4e27e8a877473010692249da4a2a23f48a790d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7526 10288 bytes

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