Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d49ac05e25bf2c…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 01:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8969579c6916d4ff8781335bae6b2880 SHA-1: 7d036b7e7fdf8cc21ad51e4801e00b65484869c6 SHA-256: 89d49ac05e25bf2cfafdf8505d3f678a736d12e5e30e55f4e6b3a87b960c3c6d
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 pointing to Shopify-hosted PDFs, which is indicative of a link farm or SEO manipulation tactic. One of the primary links, https://ttraff.ru/pify?keyword=guidelines+alcoholic+liver+disease, is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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=guidelines+alcoholic+liver+disease
    • http://files.texasredbuddental.com/uploads/1/3/1/3/131379594/beb2cc3fb6.pdf
    • http://files.nonstopfunsocal.com/uploads/1/3/1/3/131398517/ridadaboz_nanusumubivo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5261/1222/files/cria_de_artemia_salina.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/xoxosatorowigenabaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/soguzakobizososina.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/fosajumerepotufekag.pdf
    • https://cdn.shopify.com/s/files/1/0440/7489/3477/files/bobinikevetufenivoveb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/64488441421.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/amir_levine_rachel_heller_attached.pdf
    • https://cdn.shopify.com/s/files/1/0435/3094/4671/files/emulate_raspberry_pi_mac.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_off00005c60.bin
fc3c79a9f450bf69540b73029b99688230b5a506436a6a120f0620d2e5c933bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 5120 bytes
font_01_sfnt_off00006dbb.bin
07a731177752e28c8f3d977a35cd48a3d4338daa68d45cdd538c13838f6e0449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBB 9828 bytes

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