PDF malware analysis — malicious · 457af54572d18e1e

MALICIOUS

PDF

45.4 KB Created: 2020-08-31 11:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9825efbc6bebe41a95eaef2681e32736 SHA-1: 53e86ceeadb372217a5e012199c3eff47cd0586e SHA-256: 457af54572d18e1e7a81a248f372e4dcad898e4b9508ddf233fcffd4f15450a7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, specifically for containing a large number of embedded links. One of these links, https://ttraff.cc/wix?keyword=imaging+atlas+human+anatomy+pdf, points to known malicious redirector infrastructure. The document body contains garbled text and appears to be a lure to disguise the malicious links. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.cc/wix?keyword=imaging+atlas+human+anatomy+pdf
- https://cdn.shopify.com/s/files/1/0428/4219/4083/files/92120275265.pdf
- https://cdn.shopify.com/s/files/1/0432/9383/5432/files/pajubejixo.pdf
- https://cdn.shopify.com/s/files/1/0437/0661/3912/files/93569092684.pdf
- https://cdn.shopify.com/s/files/1/0436/2698/7680/files/joligoxilaxotabol.pdf
- https://cdn.shopify.com/s/files/1/0427/9818/6663/files/14104116497.pdf
- https://cdn.shopify.com/s/files/1/0430/8838/0061/files/44768870547.pdf
- https://static.usrfiles.com/ugd/b8c837_4ad074537707482d9ef2dda3d167778b.pdf
- https://static.usrfiles.com/ugd/7ff653_865e490d98e540b3a298b4cce72c5a37.pdf
- https://static.usrfiles.com/ugd/0047a4_9bbf7fe8877842e5a7ed6e8dbcfc0ace.pdf
- https://static.usrfiles.com/ugd/05301a_15c8a0880761468d8061bca32da681f1.pdf
- https://static.usrfiles.com/ugd/353d00_f15fd580a5b34c44bd3dcbed9d9e182f.pdf
- https://static.usrfiles.com/ugd/b8c837_4f3c77502bd8481685a7886b86258d2a.pdf
- https://static.usrfiles.com/ugd/b8c837_9a260537d8644b40bfbab4801e197c7f.pdf
- https://static.usrfiles.com/ugd/269bb8_815d6b7a45d44e4798a8c5c355e32833.pdf
- https://static.usrfiles.com/ugd/4b874d_614178a4d75e404b9d0491fff6c6b681.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_off0000677d.bin` `d59ab44d946d062b27e20d4c2c14558d7296ac39d61a50fa3182da2b0a3c7d35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x677D	5164 bytes
`font_01_sfnt_off000078db.bin` `0b8b0daa993d4b41e8c357a0b8c9342398451014478857ed82e2f7c94ae67e03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78DB	9916 bytes
`font_02_sfnt_off00009abf.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9ABF	4324 bytes

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