Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f13ab5b08950fcf…

MALICIOUS

PDF

40.3 KB Created: 2020-09-03 06:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c718ef06b2788fd9de5097956456270 SHA-1: 791836ad71f2bb0e9a1df9fb9dae08c63e26cbf1 SHA-256: 8f13ab5b08950fcf19bcf25bb32c3f98cc72500864faf4c7b6b200affbaefe54
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.club/pify?keyword=corfu+town+port+guide', points to known malicious redirector infrastructure. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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/pify?keyword=corfu+town+port+guide
    • https://static.usrfiles.com/ugd/b8c837_76c30cc56cbc4a86933abdb895df313a.pdf
    • https://static.usrfiles.com/ugd/74147a_aaabeef459de45eb9b033937e95bd906.pdf
    • https://static.usrfiles.com/ugd/963627_ffe067fe186f4bdda9d1bbf94a33a682.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/65692706606.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6518/files/5923167023.pdf
    • https://cdn.shopify.com/s/files/1/0433/8571/6886/files/xufisamutewasosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/vesitupabugizezumotomin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/guxuwav.pdf
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/c_aptitude_questions_and_answers.pdf
    • https://static.usrfiles.com/ugd/8b49c6_e725e7179f3c4bf68fd4e76df61f943b.pdf
    • https://static.usrfiles.com/ugd/d2759c_673530a871a34bffa5628ba1c7b02486.pdf
    • https://static.usrfiles.com/ugd/0d002d_1bd49012247c49fd92f8c8a72a9f044c.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_off0000610a.bin
f97ac1c346d5d5f69dca186c2edd84a7e58c9c1728a0373d4c8460eab58de050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 4784 bytes
font_01_sfnt_off00007172.bin
c9fa90ea2b768bc27c248bd761953a92224eebe8c3891f53d44c438240bdd6cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 10436 bytes

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