Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab8ebcf9fa1d9ef…

MALICIOUS

PDF

64.6 KB Created: 2020-08-31 01:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b5c4313267a73f1caa4d983cc00d64a SHA-1: 399d2304ba4fb48747924b4fc58e95faeacd1e8d SHA-256: cab8ebcf9fa1d9eff3e6396cdeca76557924ff67cd8484ec59df2a42f69367f0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a link farm containing numerous external links. One of these links, 'https://ttraff.cc/wix?keyword=tricks+of+the+game+programming+gurus+pdf', points to a known malicious redirector. The document body appears to be corrupted or heavily obfuscated, but the presence of the link farm and the malicious redirector strongly suggest an attempt to lure users to malicious websites.

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=tricks+of+the+game+programming+gurus+pdf
    • https://static.usrfiles.com/ugd/73cb9e_aa00a4293f3d42d0883f47ed154fb675.pdf
    • https://static.usrfiles.com/ugd/73cb9e_4431226db85645519c8d000383ba96b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_19eb905ce2e84e5c9984de8a8255a2fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_b990027b51764463bd2c0b63f04a42d4.pdf
    • https://static.usrfiles.com/ugd/5899d5_d6056adac2cb490d91bf809bc2ebb6ea.pdf
    • https://static.usrfiles.com/ugd/eed56f_d3de3a438d6d49fa817ef1b034db9ee7.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/20477643484.pdf
    • https://cdn.shopify.com/s/files/1/0450/3486/4798/files/advanced_transport_phenomena_leal_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/96514327583.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0979/files/39292256619.pdf
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/jizopijitakokejugupaloxut.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_off0000be4a.bin
9ef0c67811b602213699423032fd50a8e9513666e0b99e30af4ac0be7e338cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE4A 5548 bytes
font_01_sfnt_off0000d0ff.bin
f3b1889f488c916466f4c09cc6e0e2fd107709affa4d956a20d9ffa33cbc8ba1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FF 10604 bytes

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