Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb3b332cdc0d674…

MALICIOUS

PDF

38.4 KB Created: 2020-08-23 12:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 861be6679bd9f758f22fe079fa1b6d05 SHA-1: af5ae76ed040b15e7cb36222a3d8a30f5218a934 SHA-256: ffb3b332cdc0d6745d6edca83cfba932b207974a396223f8bf30f94edf4d173d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) or host PDF files on various domains. The heuristic firings indicate that the PDF is a link farm designed to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to popular games and software, likely as a lure to encourage clicks on the embedded links.

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=pokemon+blazed+glazed++visual+boy+advance
    • http://kubimire.shonscience.com/uploads/1/3/1/4/131453526/judinitorolojun-zesusekuzivavuj.pdf
    • http://mitomida.thebloodcrowstories.com/uploads/1/3/1/1/131164250/suserepinonire-rutejifonu.pdf
    • http://lapulijal.floridafoundationdh.org/uploads/1/3/1/3/131380005/835d4.pdf
    • http://files.trustmarkroofing.com/uploads/1/3/1/4/131437978/50bb689ed55ad23.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/vurapuwikix.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/binding_of_isaac_godmode_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/99897755936.pdf
    • https://cdn.shopify.com/s/files/1/0435/4280/6680/files/padavofobomur.pdf
    • https://cdn.shopify.com/s/files/1/0459/9418/0767/files/android_studio_install_location_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/daguboxaxibem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/bowuvilajorefibad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/7420302851.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/97264812611.pdf
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/bloomberg_businessweek_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/learning_and_acquisition_of_english_language.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_off0000555f.bin
6fc217cd1de276ef86ed71e9be5f7cc02d3a3d68b39b372a9a0864422faf506c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555F 5580 bytes
font_01_sfnt_off00006866.bin
6cc6326234c0ebfa48f73a43e507e4ff05ef2d7307c315e9c87b3f0b97ebe77d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6866 10620 bytes

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