PDF malware analysis — malicious · a0abaa2f65c20d77

MALICIOUS

PDF

45.5 KB Created: 2020-07-24 10:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9df3c767b5cf79ffda3915ce46fb270c SHA-1: 29cfbaab112195c65de7cbc658e2daacdea6438a SHA-256: a0abaa2f65c20d77c9782a89b84c46fae4e27e1306b8a64a260a505ca8ec4bc9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', disguised with a keyword related to medical treatment guidelines. It also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to contain metadata related to the lure and the tool used for generation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=diabetic%20nephropathy%20treatment%20guidelines%20pdf
- http://files.theparksphysie.com/uploads/1/3/1/4/131406498/dazutosuv.pdf
- http://files.dakinigoddessofmarrakech.com/uploads/1/3/0/7/130775825/2490174.pdf
- http://files.philipmartoglio.com/uploads/1/3/0/8/130815437/fuzof.pdf
- http://files.oiemi.com/uploads/1/3/2/8/132814306/zufeveluxaz-maganofuwago-kimomuxanal-dajaro.pdf
- http://files.stephenieayoung.com/uploads/1/3/1/4/131453623/782c12bcd2a3b0.pdf
- https://cdn.shopify.com/s/files/1/0436/7033/9737/files/nosirovebilatotit.pdf
- https://cdn.shopify.com/s/files/1/0433/7680/3990/files/66016479226.pdf
- https://cdn.shopify.com/s/files/1/0433/3273/1038/files/57043239089.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/sanumizig.pdf
- https://cdn.shopify.com/s/files/1/0431/9241/8468/files/luwef.pdf
- https://cdn.shopify.com/s/files/1/0439/3759/5560/files/23966029361.pdf
- https://cdn.shopify.com/s/files/1/0433/2758/6457/files/lefimuropifefuxozuxel.pdf
- https://cdn.shopify.com/s/files/1/0432/0516/5216/files/60570389162.pdf
- https://cdn.shopify.com/s/files/1/0429/1035/1513/files/lamaxikuxugexaj.pdf
- https://cdn.shopify.com/s/files/1/0429/9295/9642/files/62528340935.pdf
- https://cdn.shopify.com/s/files/1/0430/6416/4506/files/kuzuwivezafu.pdf
- https://cdn.shopify.com/s/files/1/0430/8910/0951/files/pimitagubamuxomexela.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000072a6.bin` `a6edc2254f70a5138c90c04a1cc8282ba5c5a2b83a9c5c6c4bc826ccc7f0c7d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72A6	5692 bytes
`font_01_sfnt_off000085d0.bin` `ae4e395fd7a2aa95e8c7c895d6c7b67fd543f8a0e9f9a7ae8ab7086f83e605eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85D0	10192 bytes

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