Malicious PDF — malware analysis report

Static analysis result for SHA-256 8117f0d1549fd780…

MALICIOUS

PDF

64.6 KB Created: 2020-08-22 02:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c9df2343bdc3599868fbfb7cb35cc53 SHA-1: cbb14dc8570b861abe727ab4d56e85256f134338 SHA-256: 8117f0d1549fd780ed143e308ab557d3a5fe53d2d5dff41fb6bc7f7c27c24225
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 and redirectors. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=accelerator+sub+indo'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous PDF links, many hosted on Shopify, indicates an attempt to create a link farm for SEO poisoning or to obscure the true destination.

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/pify?keyword=accelerator+sub+indo
    • http://nofeluv.centerponddistrict.com/uploads/1/3/2/6/132683286/sabiz.pdf
    • http://namij.glenagould.com/uploads/1/3/0/7/130739591/pifujawafupubafe.pdf
    • http://mivedotu.scenesofvirtue.com/uploads/1/3/2/8/132815806/3824681.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/cg_vyapam_patwari_2020_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/86611066422.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/gimopasedisawiled.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/biodiversity_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/kubota_diesel_engine.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/jutunuvogelo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/mexivad.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/duzuzelovodutula.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/korepatebejoxoxodajedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/administrao_estratgica_e_vantagem_competitiva_barney.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/88236979196.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_off0000675d.bin
ac0c61521e375d2d15f88a4e646ffb3aea5b8ed58d0e638b369b0e622d0b8c97
pdf-font-stream PDF embedded font (sfnt) at offset 0x675D 26944 bytes
font_01_sfnt_off0000bb0b.bin
985990ff0c1cab196eaece773b859319aae4f0a6a77287af6c8fc620edb3eac4
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB0B 5060 bytes
font_02_sfnt_off0000cc39.bin
e561dafb1d4cf67fc2d39958f16cc0d9ebb3ff30c21bf37a1c29cc1aff53ef28
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 12856 bytes