Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e1bd3cbcb4cff5…

MALICIOUS

PDF

99.5 KB Created: 2020-08-05 08:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc9c95eb33a47a7683d32044ca114cac SHA-1: e6b7ac247eba3bb72a43fc1b483a82c9bca81958 SHA-256: 89e1bd3cbcb4cff57552ccfc7e5e08b35c08e1e437a12687575efd1fa3fa8bbe
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a redirector link to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The presence of numerous embedded links, many pointing to Shopify domains, suggests an attempt to obscure the final destination or leverage legitimate platforms for hosting malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=in+search+of+lost+time+pdf+free
    • http://files.cunninghamgermanshepherds.com/uploads/1/3/1/6/131637679/dojunuz.pdf
    • http://files.emmanuelch.org/uploads/1/3/1/1/131164520/4fa18f.pdf
    • http://files.thelafs.com/uploads/1/3/2/8/132815979/wetotosi.pdf
    • http://butirox.amandaxelas.com/uploads/1/3/0/7/130739678/kazavefus-fizusibug-jekiz.pdf
    • http://files.stnectariosgeorgegoc.com/uploads/1/3/1/4/131406412/kalibilorobiva.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/fitatesufovenoti.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/xekewudiwepatonazabole.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/44112558236.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/sobugupanageg.pdf
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/asus_crashfree_bios_3.pdf
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/30609779759.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/jarujulodetetipif.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2374/files/febowigonox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/metiliwetizo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/mifafukowofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/organic_chemistry_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/9219/5993/files/different_types_of_cells_in_biology.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_off00014be4.bin
280adb0ca71c709f7b88326e56f18a5d90fc2307f81cbba61c3dae34488ef6b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x14BE4 5332 bytes
font_01_sfnt_off00015ddc.bin
f5c8abef1164f86cb52afa4ed34aaf9cc2ee014a5c587844c9a5e6a37cd49c6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x15DDC 10152 bytes