Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f62009575087a4f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-23 12:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3349cb19d22c70a83bc0d57a4ff5766 SHA-1: 04a8d447c816bc29bda6d004d91a43477d2a91c4 SHA-256: 1f62009575087a4fff32c7f7370fd87f8db3ceaca571c849893372d32630917f
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external resources, including benign Shopify URLs and other unknown domains. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware delivery.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=rocket+chat+android+can%2527+t+connect
    • http://jozupam.crrcinc.org/uploads/1/3/1/4/131454215/tuzem-vaseviv-zawezok-bokikugetoz.pdf
    • http://files.courtneydjonesdance.com/uploads/1/3/2/6/132683357/a72ce06470359.pdf
    • http://sonopidef.roseworksconsulting.com/uploads/1/3/1/8/131871729/zutosikikote.pdf
    • http://mezuzune.akurbanscape.services/uploads/1/3/0/7/130775388/6784270.pdf
    • http://files.standinfornebraska.org/uploads/1/3/1/4/131453897/lemijikuvuneziz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/the_anglo_saxon_chronicles.pdf
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/administrao_geral_e_pblica_chiavenato.pdf
    • https://cdn.shopify.com/s/files/1/0433/6713/7438/files/96952748775.pdf
    • https://cdn.shopify.com/s/files/1/0464/0279/7723/files/ari_lasso_ft_bcl.pdf
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/edward_said_reflections_on_exile.pdf
    • https://cdn.shopify.com/s/files/1/0437/8584/6933/files/99369697619.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/wolinolizepetodoweludaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/8505/2566/files/mabopudani.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8063/files/dulupewoluzatokofakivub.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/sosejipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/99430545369.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_off00007195.bin
da58f3814f7d906aa9bec0e26400656b1dfd37e9228f776b90000f28952b59d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7195 4920 bytes
font_01_sfnt_off00008241.bin
3301f544dd0c2d8733237827cf4359f15cc68114861610694508555aeceec6a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8241 10412 bytes