Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e69fef0ca838934…

MALICIOUS

PDF

39.6 KB Created: 2020-08-06 11:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723fd974ef09646678606241c2889bfd SHA-1: af35d3a2991b76fb7023007723d633b5d3c05948 SHA-256: 9e69fef0ca83893487a907a124356ee2b4b6abd447d28119f5414ea6a931725e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=basic+electrical+engineering+pdf+file+download', which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a link farm or redirection scheme to distribute malware.

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=basic+electrical+engineering+pdf+file+download
    • http://files.juditduran.com/uploads/1/3/1/4/131437724/bijur.pdf
    • http://files.emotionalfreedomfacelift.net/uploads/1/3/1/6/131637255/bopekulir_sesusut_jezufutumexosa_sitogaloj.pdf
    • http://files.iamproductionstt.com/uploads/1/3/2/6/132681671/40f7c39a29763c6.pdf
    • http://files.weirdobooks.com/uploads/1/3/1/0/131070842/gakaz-verumexebuwas.pdf
    • http://files.alfrescosrestaurantpaihia.com/uploads/1/3/1/4/131408068/5532837.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/casio_g_shock_watch_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/mthode_amortissement_dgressif.pdf
    • https://cdn.shopify.com/s/files/1/0429/3197/8403/files/27975059720.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/57214670582.pdf
    • https://cdn.shopify.com/s/files/1/0437/4783/6058/files/sikis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/sublime_text_python_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/libuzab.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/ohio_bmv_locations.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/58617670148.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/50150564121.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_off000059e2.bin
6191e39f3e5ad3f6bb8d2556408b5c749782967fbd3345d8a04adb530da8106f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E2 5464 bytes
font_01_sfnt_off00006c96.bin
33d1c907ae33c90ec578bff023afb9e2fc4784fb77537235b418caf48c22e3df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 10868 bytes

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