PDF malware analysis — malicious · 9464ca73c07addaf

MALICIOUS

PDF

39.5 KB Created: 2020-08-13 22:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b79ca74717b4f47f224f6f3b9c27bcfc SHA-1: 66a3f7dd9a8d3bdcbbbc468ce3338ab000455c41 SHA-256: 9464ca73c07addaf031197e0acefb35674487c4f1b67b676cd32f8c8def0542a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lure the user into downloading further malware or visiting a phishing site. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure related to physiotherapy reports. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility of the 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.com/wb?keyword=befund%20physiotherapie%20pdf
- http://files.sarahclariusphotography.com/uploads/1/3/1/1/131164236/defikakad-kixuv.pdf
- http://files.petpigeducation.com/uploads/1/3/0/7/130738892/683a8b7a69e3f3.pdf
- http://lenasinux.honeybeetreasure.com/uploads/1/3/1/4/131453114/6463462.pdf
- http://files.fswff.org/uploads/1/3/0/9/130969764/fosiwemajubaxovozote.pdf
- https://cdn.shopify.com/s/files/1/0430/6888/3098/files/gokigenorerujumux.pdf
- https://cdn.shopify.com/s/files/1/0433/9879/1329/files/gubenasitulamarolenuju.pdf
- https://cdn.shopify.com/s/files/1/0433/1352/8987/files/81324312782.pdf
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/menosunupajiminegoziged.pdf
- https://cdn.shopify.com/s/files/1/0432/0421/4942/files/69524648152.pdf
- https://cdn.shopify.com/s/files/1/0439/0102/6459/files/23211775835.pdf
- https://cdn.shopify.com/s/files/1/0433/3892/4181/files/90240244538.pdf
- https://cdn.shopify.com/s/files/1/0434/3706/4344/files/91469759705.pdf
- https://cdn.shopify.com/s/files/1/0428/7427/3948/files/19663279979.pdf
- https://cdn.shopify.com/s/files/1/0437/0055/1845/files/cancer_de_colon.pdf
- https://cdn.shopify.com/s/files/1/0431/6643/3429/files/30494952051.pdf
- https://cdn.shopify.com/s/files/1/0430/1750/2869/files/antecedentes_historicos_de_la_drogadiccion.pdf
- https://cdn.shopify.com/s/files/1/0432/5241/6672/files/82914942552.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_off000059fb.bin` `09800ada15ef54acd3f5f3d2d95676fd8e74d9450bf955ca0a22f5ab1d7aa6e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59FB	5248 bytes
`font_01_sfnt_off00006bd6.bin` `525da048fbbd2681b466789172ac3e6a53cdc918381a62394ded8c45021e858a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BD6	10976 bytes

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