Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf382e099c18d1b…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 10:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596a828308d1bb41db10271b6a3fbc86 SHA-1: 761ca4f1f928b1865c156140346c98a15b0d6de8 SHA-256: fdf382e099c18d1b305ec15a9bbe67673ca508fe35725c068f2f2247af84a40d
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 pointing to external resources, which is indicative of a link farm or redirection tactic. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=public+administration+notes+for+upsc+optional+pdf. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous shopify.com URLs, while some are benign, contributes to the overall link farm appearance.

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=public+administration+notes+for+upsc+optional+pdf
    • http://files.silvermoonkennels.com/uploads/1/3/1/6/131606133/jilutadazi.pdf
    • http://files.noodlefactoryjazz.com/uploads/1/3/1/4/131437859/dojokol_dulej_vakuvugi_jupofenavidex.pdf
    • http://kexedopez.sushitimedexter.com/uploads/1/3/1/4/131453133/7019168.pdf
    • http://files.mplboutique.com/uploads/1/3/1/4/131409442/ridojamatomukanij.pdf
    • http://files.rt19produceauction.com/uploads/1/3/1/4/131454304/3943432.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/44626275715.pdf
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/bevuxogibazukerilimadabo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/rolobapiwuridenelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/89493652517.pdf
    • https://cdn.shopify.com/s/files/1/0430/6570/4599/files/34346391524.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/carbono_quiral_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/blackwell_encyclopedia_of_political_science.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/fefesikasipirokaloluzegix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/gumopaxusaxinolipojizoker.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/after_effects_cs6_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/80268774495.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_off00006fcb.bin
a3fcad45797e511b0668b5c18b387aa102c5c373fc140851fe40397466b76453
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 5444 bytes
font_01_sfnt_off00008230.bin
cc5d3dfb87e73849eca8e9e55f9d210a8d04dea5fcacaec2ef4832712af70acf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8230 10540 bytes