Malicious PDF — malware analysis report

Static analysis result for SHA-256 d765b0e8934ff70f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 01:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef5ee6d662e6851d3f64b20f9eee5e0 SHA-1: cb869f4a2633326466d85f82e6d00002a9132373 SHA-256: d765b0e8934ff70f71b422349072a8e5541c5d8632b5b11900d4416162b9d5dd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a redirector. The primary redirector URL is https://ttraff.com/pify?keyword=arewa24+jingle+ringtone. While many other links point to benign Shopify URLs, the presence of the redirector suggests an attempt to obscure a malicious destination. 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.com/pify?keyword=arewa24+jingle+ringtone
    • http://files.zeljkogora.com/uploads/1/3/1/3/131379060/murufodekilam-pepajoso-rexom-mujabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9925/8022/files/28821129012.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/dovinix.pdf
    • https://cdn.shopify.com/s/files/1/0432/4596/1383/files/56102013887.pdf
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/nubuneva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/39750781841.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/exercise_physiology_lab_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/foxuvanededazunoseva.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/fanupap.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/12460171588.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/13127554384.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_off0000666c.bin
9c6c6ab55fb5239c9df6d0501b796b2f746883db7b82b065f477c3254f14ebe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5052 bytes
font_01_sfnt_off000077ca.bin
68567250e5d4275cef09b4edc4702d24e96c6347ca605f6892dece1b7e947e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 14908 bytes

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