Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c868208abfa696c…

MALICIOUS

PDF

41.4 KB Created: 2020-08-01 09:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fd12d57609940a3bc2547d1a160e1c2 SHA-1: 7f9bdf85efa552f8486d2c22dd8e4cf2a514ad6b SHA-256: 2c868208abfa696cdcc5e7e46c3702c70674c9964a70a88af5ba3f07cc325a14
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.cc/pify?keyword=us+time+server', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious redirector.

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/pify?keyword=us+time+server
    • http://files.tripointlutheranparish.com/uploads/1/3/0/7/130776757/suzavugo.pdf
    • http://files.perciakwedding.com/uploads/1/3/1/3/131398164/9951377.pdf
    • http://files.romseysingers.org/uploads/1/3/1/4/131409909/3944b87f64.pdf
    • http://files.harrypottergoestoschool.com/uploads/1/3/0/7/130776104/206988.pdf
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/chilton_repair_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/gaxezevive.pdf
    • https://cdn.shopify.com/s/files/1/0438/6773/4176/files/73862855795.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/bimanowalun.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/16404138009.pdf
    • https://cdn.shopify.com/s/files/1/0430/7147/1767/files/12101450856.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1072/7841/files/95564046918.pdf
    • https://cdn.shopify.com/s/files/1/0434/3395/1399/files/betig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/56462569543.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/33286017662.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/nuzepe.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_off000065ec.bin
3f12754462e231725e282a648720f6ed5355a4c4fd3f43d8fa855fdd607bdc36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 4640 bytes
font_01_sfnt_off000075ab.bin
5686f7cd29dc95a516cc254dff5d1930f3933a3f80c55daa2d4d9a09eeb0179c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 10324 bytes

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