PDF malware analysis — malicious · f1f04e37cc0d5de6

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 15:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a5d805eccbd36cba107dc18eb3512882 SHA-1: fe1a7e3b94dc0ef492536a3853819dc24a88bb9f SHA-256: f1f04e37cc0d5de6a1171970fc812b46cf7d5aaa7e70f23868c4403e50b444fc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a "Ca canada food guide" which points to `https://ttraff.ru/pify?keyword=ca+canada+food+guide`. This URL is known to lead to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=ca+canada+food+guide
- http://files.aaronmossmedia.com/uploads/1/3/2/3/132303131/zosonizuro.pdf
- http://files.latitudetravelplanning.com/uploads/1/3/1/3/131383456/8600167.pdf
- http://files.uppereskmusic.com/uploads/1/3/2/6/132682882/vasobepo.pdf
- http://files.wallingfordmuseum.org.uk/uploads/1/3/2/3/132302859/ecaaf4a3e453ae8.pdf
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/91741814543.pdf
- https://cdn.shopify.com/s/files/1/0430/5122/1146/files/61238628400.pdf
- https://cdn.shopify.com/s/files/1/0434/9765/2376/files/minujemezilosanegesanado.pdf
- https://cdn.shopify.com/s/files/1/0434/0108/5082/files/fujivafokaxilufiwif.pdf
- https://cdn.shopify.com/s/files/1/0428/6598/3655/files/11208632083.pdf
- https://cdn.shopify.com/s/files/1/0432/2256/5032/files/carl_jung_red_book_free_download.pdf
- https://cdn.shopify.com/s/files/1/0434/0455/8488/files/pericardial_effusion_pathophysiology.pdf
- https://cdn.shopify.com/s/files/1/0431/6630/2376/files/busirogibosatewosu.pdf
- https://cdn.shopify.com/s/files/1/0433/0340/3678/files/buzixexojo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdf
- https://cdn.shopify.com/s/files/1/0432/9757/0980/files/57818977648.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_off00006400.bin` `dfcd31f871259f66b3a29f178d68c650575f47a8ac6f065a938eae6d27b29750`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6400	4708 bytes
`font_01_sfnt_off00007414.bin` `7e58d677bed13b26b218f0d45c0c5e2522ce07b6c332f71335f0279639db5af4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7414	10012 bytes
`font_02_sfnt_off00009638.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9638	4324 bytes

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