Malicious PDF — malware analysis report

Static analysis result for SHA-256 3314dcd82ec732a2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-01 09:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ed2f4d75787cfa0482436c1d499538c SHA-1: 48a65dad22e914546f55d7634c79db13437c4e54 SHA-256: 3314dcd82ec732a28584967e2997fa1c83b773ef81aa0a52393e6ec1e32299e5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a 'white and rodgers thermostat manual'. This indicates a phishing or malware delivery attempt. The document also contains a large number of embedded links to other PDFs, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. 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=white+and+rodgers+thermostat+manual
    • http://files.brendanswallace.com/uploads/1/3/0/8/130873945/lofera.pdf
    • http://files.nakaishatolbertbanks.com/uploads/1/3/1/8/131857315/zitigotowoxeluvife.pdf
    • http://files.aj4fitness.net/uploads/1/3/1/4/131453395/sugalemalag.pdf
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.pdf
    • http://files.morethansoulfood.net/up
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/zenapimelatekuvar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/zitovemomamukatawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2933/1100/files/dejokutinulusezemorab.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/pefodikabinuzegusixej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/8947771006.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/81946892838.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9143/files/zuzivim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4974/5558/files/85950700157.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/mikagosisela.pdf
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/68202822241.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_off000063c9.bin
a2a3cd13c4dc3643f3fa9c036d4cee76040125a5309c329c280c66f88c3e9bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 5252 bytes
font_01_sfnt_off00007588.bin
acfecdd6c1bea9d77712aa2587a7dcd3b6c635c39371d26ad7dd649f0e929f9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7588 10444 bytes

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