Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ce791a2dc13d07…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 14:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 594b0d802c6f3e116e2f0017ac6774b8 SHA-1: 68ebd3b01a49aa795e10ac2df15ac55bcdc291c2 SHA-256: 40ce791a2dc13d0744d2085c30fe0f7c3972592845310d793bde7d7af55dfa56
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.cc/pify?keyword=giant+dwarf+osrs+quick+guide', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content or phish users. No scripts were extracted, but the sheer volume of links points to a delivery mechanism for further malicious activity.

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=giant+dwarf+osrs+quick+guide
    • http://kajuza.oceanescapestravel.com/uploads/1/3/1/4/131437657/7761342.pdf
    • http://files.jessicabechtelart.com/uploads/1/3/1/3/131398252/ruxonukulezubujof.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • http://files.buildingbrilliantlives.com/uploads/1/3/1/1/131164118/tenis.pdf
    • http://files.otelj.com/uploads/1/3/1/6/131636655/265a6df50d.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/ligumojizaxafuxedatanofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/pazifizibiloponibavuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/sukotus.pdf
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/translate_morse_code.pdf
    • https://cdn.shopify.com/s/files/1/0447/0344/9241/files/fundamentals_of_applied_electromagnetics_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/samenewudolitiriwarefabuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/33837680259.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/zuropekevomiwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/bitlocker_windows_7_home.pdf
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/importance_of_symbolic_interactionism.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/33267883914.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/66358876878.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/grey_gratis.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_off0000676b.bin
dc845888c6f6e522db1d361b9eca53001d7da33a78d829acc2ba7e0c4c123c6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x676B 5472 bytes
font_01_sfnt_off00007a26.bin
85a539feb0a25379a3ea867a7b01bf076afc6f84a78ca155c452fe0596dfccc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A26 10020 bytes