Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1195bfb4a76bba8…

MALICIOUS

PDF

45.9 KB Created: 2020-07-29 19:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 743b5c1f8ab49041d87b31dbf99eb495 SHA-1: 53e02e7be67a188d88c815f738e87940bf03bd87 SHA-256: d1195bfb4a76bba8b520242c50ba621bd2f72b1c9bea17b22586398cdc74ccd4
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=punctuality+in+the+workplace+pdf', which is part of a larger link farm strategy. The document body, though heavily obfuscated, suggests a theme related to workplace punctuality, likely as a lure.

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.ru/pify?keyword=punctuality+in+the+workplace+pdf
    • http://files.ninepoundcatfish.co.uk/uploads/1/3/1/0/131070590/ludiv.pdf
    • http://files.littlegoblingarments.com/uploads/1/3/2/6/132681767/xujupobupuze-wizob.pdf
    • http://files.detailedbyandrew.com/uploads/1/3/1/3/131384489/naratexobax-bakoxir-merupo-radutuz.pdf
    • http://files.sosalliance.org/uploads/1/3/1/4/131453065/xaveso.pdf
    • http://files.sosalliance.org/uploads/1/3/1/4/131453065/xaveso.p
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/getejimutivuki.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/lenofanevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/3155321438.pdf
    • https://cdn.shopify.com/s/files/1/0438/2215/3890/files/32068499734.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/66942047044.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/jabuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/25607867908.pdf
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/75953039384.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/61984128394.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/10863185980.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_off000076d5.bin
86f6fd243d62c4cd2567558ad2237f086787484e6df995927261471fb53f96c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D5 5208 bytes
font_01_sfnt_off0000888b.bin
42d0528bb6c36dba1a1923ec19ab4e1c76351bb5751b24ac8456d87ae15202ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x888B 9996 bytes

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