Malicious PDF — malware analysis report

Static analysis result for SHA-256 337068c5d05cf8eb…

MALICIOUS

PDF

57.7 KB Created: 2020-08-05 05:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 901c29561adb7bd27a02a2646a1ae090 SHA-1: 3037d19584ba5dad3384484c6e99d6b60236214c SHA-256: 337068c5d05cf8eb00ca49156e2e7da5d9d64284eee9b31388e38569c5b28481
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.com/wb?keyword=radial%20distribution%20function%20pdf'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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/wb?keyword=radial%20distribution%20function%20pdf
    • http://files.jessiedallasdesigns.com/uploads/1/3/0/7/130739084/jawibim.pdf
    • http://files.mendingspirits.org/uploads/1/3/1/4/131438682/gujuteri-lakafexituxo-norepo-dinimugirazed.pdf
    • http://files.tasc-group.com/uploads/1/3/0/9/130969418/1500612.pdf
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/vewenovavalisivupezos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/wipulasowepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/92178837802.pdf
    • https://cdn.shopify.com/s/files/1/0434/7625/4873/files/97841072944.pdf
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/fidujudivofidamole.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mukevosegimudakes.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/50662581381.pdf
    • https://cdn.shopify.com/s/files/1/0433/9826/7029/files/osu_cookiezi_skins.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/penotu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c0c.bin
4577a90715c4852c8bfe0a831a770db66de36e3dd62abac28fe73e1e47b0f834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0C 5296 bytes
font_01_sfnt_off00009e20.bin
9cb4dc1c9fc7b320b3b470972b2000b5037acf1bc5bd0ce5173cdda8c50e7c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E20 11208 bytes
font_02_sfnt_off0000c493.bin
16195100a68932d0a2e9255d62a9beddcf7c42b31d6bc52d73f11ef07aec883a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC493 16212 bytes

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