PDF malware analysis — malicious · 3f55ea9f83efc266

MALICIOUS

PDF

119.4 KB Created: 2020-07-30 15:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8d20cb1d61843e29af2ce5e418cafafd SHA-1: ae778b1dca5b504e81462bd5cc3b5770ad499018 SHA-256: 3f55ea9f83efc2669b51ad0400e3405536ab042e282486f84a6e08884af95d33

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 one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious link, 'https://ttraff.com/pify?keyword=biguanides+davis+pdf', is flagged as a redirector to known malicious infrastructure. The document body is heavily obfuscated and appears to be largely metadata rather than user-readable content, suggesting its purpose is not informational but rather to host these links.

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=biguanides+davis+pdf
- http://files.childrensmarketatthemill.com/uploads/1/3/2/6/132682040/bonoripo.pdf
- http://files.renaissancesingersretreat.org/uploads/1/3/0/9/130969999/9275181.pdf
- http://files.gapco.online/uploads/1/3/2/7/132712127/ac0265cc3778.pdf
- http://files.myremio.com/uploads/1/3/2/6/132695698/zevufiritip.pdf
- https://cdn.shopify.com/s/files/1/0428/6706/4998/files/51287292187.pdf
- https://cdn.shopify.com/s/files/1/0430/9699/8048/files/mevofix.pdf
- https://cdn.shopify.com/s/files/1/0430/8933/0330/files/88295493325.pdf
- https://cdn.shopify.com/s/files/1/0429/8476/7641/files/kireweteg.pdf
- https://cdn.shopify.com/s/files/1/0432/4347/1003/files/20132428028.pdf
- https://cdn.shopify.com/s/files/1/0432/5064/7204/files/wogisoratopimilul.pdf
- https://cdn.shopify.com/s/files/1/0436/6693/1862/files/23588387755.pdf
- https://cdn.shopify.com/s/files/1/0430/8792/1313/files/tafekumodiwalinix.pdf
- https://cdn.shopify.com/s/files/1/0432/4743/5940/files/jaxujuzumuse.pdf
- https://cdn.shopify.com/s/files/1/0429/8991/2218/files/vekujaxumajizelepa.pdf
- https://cdn.shopify.com/s/files/1/0438/5275/9200/files/93511877591.pdf
- https://cdn.shopify.com/s/files/1/0429/6091/2537/files/nepemifarizel.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00017823.bin` `32171bd3ce2e33ada42e1ce924c7b2c076713adbeb68e02aaf8ce138fe31a31f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17823	4884 bytes
`font_01_sfnt_off000188da.bin` `eca5849db3e47f8d4b6001d07cd8c5d342c6cedef25672b76c9c56a7480098bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x188DA	15264 bytes
`font_02_sfnt_off0001b948.bin` `9759ce8d6b03285eaaf0b3a467cae172b6556f7d7d175f3d646a9f0b73e2040d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B948	16160 bytes

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