Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa8135d4a290296…

MALICIOUS

PDF

43.4 KB Created: 2020-08-02 00:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48965ecc5fd718dad9cebcfaa4cff54b SHA-1: 6bdd886c8fe21e0b7bdbcf11d74d63652ef0d798 SHA-256: 9aa8135d4a2902968e0dba8d18dc5aee1dcec473f12cc6412e8609a313b6eb04
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body contains garbled text and a reference to 'The glass cage', suggesting a lure, but the primary malicious activity appears to be the extensive use of external links.

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.com/pify?keyword=the+glass+cage
    • http://files.dinahparums.net/uploads/1/3/1/4/131453268/kutolujanovewo.pdf
    • http://files.2as.ency-education.com/uploads/1/3/0/9/130969371/7170361.pdf
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/gosakijelomubozisagaraxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/kiradisefewamamixeti.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/70852188294.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0023/files/59995291034.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/kuka_robot_programming_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/game_maker_collision_with_wall.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/balarawijulasobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/mikamizoduwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/wewaxajiram.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/52868022127.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/xusoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/210599405.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_off00006e54.bin
89d179da8752c16665465f90e4351ec7daf28d6406715fba1d8ebced7cf7a59e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E54 4916 bytes
font_01_sfnt_off00007f12.bin
48b6f119568c5dd6f1c4291b00343a607c30b2cc53ea4eba73348b7f0aadd7dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 10008 bytes

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