Malicious PDF — malware analysis report

Static analysis result for SHA-256 4912f01191664165…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 15:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84108b9cbabbda79c843d34d9974db0b SHA-1: 131cc19ccb11e83946e924cd4b40cc05163efed8 SHA-256: 4912f011916641650becac77a81d6c4560159541ae3c4ce01c0edb645761a01a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a lure to install a browser extension or update, a common social-engineering tactic. It also hosts a large number of external PDF links, many pointing to potentially malicious redirectors like ttraff.com. The document body itself contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=bootstrap+admin+login+form+template+free
    • http://dutof.spikyshooz.com/uploads/1/3/1/4/131453247/sotukokeratagobafot.pdf
    • http://files.browncountyhumaneshelter.com/uploads/1/3/0/8/130813134/durixigox.pdf
    • http://ruvobe.rangebourne-pets.co.uk/uploads/1/3/1/4/131453960/4217390.pdf
    • http://xopofapun.hauntedmichigan.net/uploads/1/3/2/6/132695531/fivepotebab-dowajaguwi-sirum-vufevesogilo.pdf
    • http://files.nhaohpad.org/uploads/1/3/1/4/131437515/fazewapa-zifafajanub-jasesudikesup.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5978/files/process_analysis_essay_topics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/salelixakibikiziz.pdf
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/81761348981.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/2012_honda_accord_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/rifugo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/81813517860.pdf
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/74746252279.pdf
    • https://cdn.shopify.com/s/files/1/0440/4068/3685/files/detakap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/97957299222.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/38599610542.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/basic_english_comprehension_test_with_answers.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_off000085cf.bin
80874ae17b5c0490dcddcad47b4b6fada854f2900ec64ca34a1567247332b502
pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 5408 bytes
font_01_sfnt_off00009822.bin
022ee2e60055845b0e0acaf14b5a22d13d5c763e5e994603739e77e4693a1acf
pdf-font-stream PDF embedded font (sfnt) at offset 0x9822 10392 bytes