Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c6713919fcecfb…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 11:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 509f4e77afeb34789504353217b85f02 SHA-1: b7cd7f71690f08145f244092ee382b8b54e5a9e8 SHA-256: 22c6713919fcecfb5c5d55fba2463d4d3552d89bd8f681e673e92a575b5ce7cc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=building+maintenance+report+pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on cdn.shopify.com, indicates a link farm designed to distribute malicious content.

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=building+maintenance+report+pdf
    • http://jinanubif.ostendmarineservices.com/uploads/1/3/1/6/131637308/9424025.pdf
    • http://files.charleslpearson.net/uploads/1/3/1/6/131637853/843669.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/sokel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/que_es_el_alantoides.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4408/files/kakegasiwisegizoge.pdf
    • https://cdn.shopify.com/s/files/1/0436/1617/4243/files/8631401619.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/dopadabiwukileku.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/lorowip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/gagitobabiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/kokivafuji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9817/7693/files/fallout_new_vegas_mod_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/36374657975.pdf
    • https://cdn.shopify.com/s/files/1/0444/5192/2087/files/baldassare_castiglione_book_of_the_courtier.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_off0000658a.bin
985a65b1758c5060de4737ef818ffdcee6e58c23ec7c162348801409fd3c7c10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658A 5344 bytes
font_01_sfnt_off00007798.bin
26960ef617c4b9c78010fa11c1bd2afa16e80c4540141cdbe4e096ca92c3e8ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 9996 bytes

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