Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d06fa7da917506…

MALICIOUS

PDF

48.3 KB Created: 2020-08-11 00:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8744a03aa9498dd92d3e663d5a85877d SHA-1: 7145d919f32dd999f5cfad2176265702daef02ca SHA-256: 43d06fa7da9175069e618e2591646c8df2fedaa269e36830c0c827187bd99d86
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 Shopify domains, suggesting a link farm designed to obscure the ultimate destination. One critical heuristic identified a link to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, also contains this URL, indicating a likely attempt to lure users to a malicious site for phishing or malware delivery. 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.ru/pify?keyword=bums+in+the+attic+pdf
    • http://kokexem.hollymsmithphotography.com/uploads/1/3/1/3/131379730/muxajufurivi.pdf
    • http://files.adirondack90miler.com/uploads/1/3/1/4/131406403/fusodum.pdf
    • http://files.riversideartswalk.com/uploads/1/3/1/4/131438844/4571769.pdf
    • http://files.crossfitparsons.com/uploads/1/3/1/3/131380308/942586ce18227.pdf
    • https://cdn.shopify.com/s/files/1/0429/6582/7747/files/clannad_visual_novel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/76384452370.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/94123081708.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/33679279401.pdf
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/39343560354.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pidepuwavulosetanujerepub.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/25610218349.pdf
    • https://cdn.shopify.com/s/files/1/0437/6333/5319/files/mogepetizir.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/winidozuwidom.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_off00007fb3.bin
02838cad7b4291f0532b3dd16472510605ef0ae99bfe927b82b80c33e81a1720		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB3 5316 bytes
font_01_sfnt_off000091a0.bin
7f16db2678d0b50d4cf3125ba112ecd96380d51479ac45f8f028cee639dee65a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91A0 10208 bytes

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