Malicious PDF — malware analysis report

Static analysis result for SHA-256 adaddb6749e55693…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 21:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bb696c141e9ee960cbffe30451c0e48 SHA-1: f3f9a14cbb7ecd3a12f23e8c9226e196676b6a08 SHA-256: adaddb6749e55693d14344cc8cd9775957cac7bb025f6ba8a260835376573662
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection tactic. The presence of a visual download button further supports the lure. The primary malicious URL is https://ttraff.cc/pify?keyword=basis+swaps+pdf, which likely leads to further malicious content. The document body itself is heavily obfuscated and contains embedded URLs.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=basis+swaps+pdf
    • http://files.hamshaw888.com/uploads/1/3/1/3/131378985/pojafi.pdf
    • http://files.ruanlanihorneparishcouncil.org/uploads/1/3/0/7/130739806/gepajamezolu_xezuxoxawuna.pdf
    • http://files.thebarometershop.co.uk/uploads/1/3/2/8/132814611/lebemepa.pdf
    • http://files.shakeituptheatre.com/uploads/1/3/2/7/132710569/707c783ba6bf5f.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/lasarudawepuxexojaginike.pdf
    • https://cdn.shopify.com/s/files/1/0431/7940/9568/files/51054169066.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/www_repairsurge_com.pdf
    • https://cdn.shopify.com/s/files/1/0435/8704/3496/files/ipcc_cost_accounting_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/vanogufososo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5878/1590/files/21601765893.pdf
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/77182446979.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/90933697084.pdf
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/parris_can_t_let_go_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/nomijuxesiriz.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_off0000633a.bin
c4cd101068b6897a4b5245c17e34ad1000696103d19f60ef513f12cb8d25e901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 5048 bytes
font_01_sfnt_off00007493.bin
2785d97382ddfc47fdd4652769077e364a04df8d8b6f81f918101cd61fccac14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7493 10524 bytes

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