Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5da9ac98752f9e…

MALICIOUS

PDF

49.7 KB Created: 2020-08-25 18:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40182f22a454304f9e3490686694e7a0 SHA-1: 08d5385bb8832b288818b7e259ac16705e395ae2 SHA-256: 2e5da9ac98752f9ec5150b6e601648dbd807aa185eaf9df49c4711e1251641f3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=awdhesh+premi+bhojpuri+video+2018++mp4'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure. 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/pify?keyword=awdhesh+premi+bhojpuri+video+2018++mp4
    • http://files.jssirite.com/uploads/1/3/2/7/132740423/fawupirufarumix-jexixodoxoj-rojugebavu-lerobov.pdf
    • http://files.sangerlearns.com/uploads/1/3/0/7/130776223/dafozesox.pdf
    • http://wotab.emilyrobards.com/uploads/1/3/2/8/132814975/0e92ed59aa14.pdf
    • https://cdn.shopify.com/s/files/1/0433/0894/1467/files/ferezufelifonu.pdf
    • https://cdn.shopify.com/s/files/1/0462/6389/4173/files/beaver_dam_state_park_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/8730/6658/files/tuscan_house_plans_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/lemazorekofopa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/49845131143.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/55833121988.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5636/files/student_exploration_conduction_and_convection_gizmo_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/nanaloxid.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/23131036828.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/sazatuxojupodefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/wilowifepiwe.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_off00006607.bin
dd6f92002c87d34a36e93b6bb658d3976239911d4ddbd9955e08ce4672db9b56
pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 5920 bytes
font_01_sfnt_off00007a32.bin
2ea13ffeb696f4c3bb2f7c9f75e72465dadae89716c6072efa1c6892205867cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A32 14792 bytes
font_02_sfnt_off0000a7cc.bin
d41e5ab3a1eac4763b21a920b89e0d59c0821fbd0c325ff97db5b29f5abdd89b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CC 4168 bytes