Malicious PDF — malware analysis report

Static analysis result for SHA-256 248d68e887466001…

MALICIOUS

PDF

63.7 KB Created: 2020-08-22 01:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2c0a95143ab066f3e02e1acfd8ffedc SHA-1: c5d2dfbeceb8c2d2af6e9e64574945ff72d89514 SHA-256: 248d68e887466001973e0b68a87995ca3d03d473073bfa55c416b555bc30ffef
150 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, which is also present in the document body. The link leads to 'ttraff.cc', a known malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=georgia+travel+guide+magazine
    • http://files.electricmoonmagazine.com/uploads/1/3/1/3/131383318/512440a80.pdf
    • http://files.balancedventurehorsemanship.com/uploads/1/3/1/4/131437878/dakab_pekigajapex_xutudatapive_rasotikuk.pdf
    • http://napaluje.sieglindemcgee.com/uploads/1/3/1/4/131407836/teteworazebinu.pdf
    • http://zuketo.undergroundblend.com/uploads/1/3/1/0/131070450/3b41e338878f89.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/angular_reactive_form_control_valuechanges.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/ruxubamapozemiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/52202867170.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/rephrasing_sentences_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/1405/2247/files/gomonik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/zafikufanuxiliturevev.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/gavuvife.pdf
    • https://cdn.shopify.com/s/files/1/0437/8873/0525/files/tolilikopedewud.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/27769147318.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/68389975631.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_off0000bb83.bin
f666b865c8ba64a4a48345dfd645d00752c5155f69cc9c3e57851ad862498350		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB83 5108 bytes
font_01_sfnt_off0000cce1.bin
6b39e39868f1033558fdea9d28304c5ccaa2915ac145a468268e279c2c2527c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE1 10784 bytes

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