Malicious PDF — malware analysis report

Static analysis result for SHA-256 967ca3a874617baf…

MALICIOUS

PDF

48.1 KB Created: 2020-08-14 02:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7908e33064c89d5901b29bbdb51403ad SHA-1: 46c5be6515cca6bf680f49853461ecac2a1f645c SHA-256: 967ca3a874617baf4f09b6b2bdda49bf901e2d2c65b19ed535566f306a5e3b47
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. No scripts were extracted from this sample.

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.ru/wb?keyword=predicate%20noun%20examples%20worksheet
    • http://files.augustjaccaci.com/uploads/1/3/2/3/132302999/juwakonis-fazafuti-newifa-kaweriregoj.pdf
    • http://nazim.karenbabine.com/uploads/1/3/1/6/131636725/gatiliwel.pdf
    • http://files.truthlifevictorychurch.org/uploads/1/3/1/3/131383821/zowefode.pdf
    • http://boxof.nourishe.co.nz/uploads/1/3/1/8/131856318/zorelugifusese_woriresu_xevitivaw.pdf
    • http://gefagone.kimonosk.com/uploads/1/3/1/6/131637136/zuruwejovarim.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/76683583453.pdf
    • https://cdn.shopify.com/s/files/1/0430/6246/0577/files/saxugubajigerefuwojolewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7718/0328/files/up_law_aptitude_exam_reviewer.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/rrb_je_exam_previous_year_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/87194612957.pdf
    • https://cdn.shopify.com/s/files/1/0431/6725/2629/files/digiliwadana.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/78069899351.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/22712598763.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/the_walking_dead_s07e15_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/91518020796.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/35836445093.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/drdo_ceptam_09_syllabus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006185.bin
d9966b63d56ff2a377b426eb4241d3a265cf59a8baf7b68f2d380d5cf8c46d71
pdf-font-stream PDF embedded font (sfnt) at offset 0x6185 5540 bytes
font_01_sfnt_off0000743a.bin
c54f74615e09c70b26d5e041ddf885780735893b7cc8a0d3b7062ea189bcc163
pdf-font-stream PDF embedded font (sfnt) at offset 0x743A 10280 bytes
font_02_sfnt_off0000975a.bin
a17e71797fb7d58c35dbfeff08c5255af23efd1d4e0fd3ed1c981c985874d691
pdf-font-stream PDF embedded font (sfnt) at offset 0x975A 17888 bytes