PDF malware analysis — malicious · fb98b2bf3384ae3f

MALICIOUS

PDF

73.7 KB Created: 2020-08-06 14:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aacbe5409f0ee802523552941d647269 SHA-1: 7c60a01d80469cb46de17840af09420777a8da3c SHA-256: fb98b2bf3384ae3f93ec31e44a114cfedacd0048667395b2f4c8ca7d7e42a874

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious objective. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=aeronef+rules+pdf
- http://files.beavercrossministries.org/uploads/1/3/1/4/131482954/rizagagoniwog.pdf
- http://files.redeemerfortbend.org/uploads/1/3/1/3/131380031/d9f46fc.pdf
- http://files.ffylloniaid.com/uploads/1/3/1/3/131384374/dobitewuza.pdf
- https://cdn.shopify.com/s/files/1/0434/9585/0150/files/my_book_of_alphabet_games.pdf
- https://cdn.shopify.com/s/files/1/0430/9581/8397/files/jaloregozasifesimanazep.pdf
- https://cdn.shopify.com/s/files/1/0432/5670/9273/files/naxofon.pdf
- https://cdn.shopify.com/s/files/1/0429/9191/1066/files/zosezobezunalibimi.pdf
- https://cdn.shopify.com/s/files/1/0432/2135/2606/files/82794736648.pdf
- https://cdn.shopify.com/s/files/1/0431/1754/3588/files/21205862803.pdf
- https://cdn.shopify.com/s/files/1/0429/8912/5791/files/minecraft_flight_simulator.pdf
- https://cdn.shopify.com/s/files/1/0435/9228/6363/files/26024741613.pdf
- https://cdn.shopify.com/s/files/1/0436/5543/0302/files/xujavademujupanibanekinu.pdf
- https://cdn.shopify.com/s/files/1/0428/5802/1027/files/history_pockets_ancient_egypt.pdf
- https://cdn.shopify.com/s/files/1/0428/9508/1625/files/36753671490.pdf
- https://cdn.shopify.com/s/files/1/0431/0876/1764/files/pdf_to_word_converter_mac_free.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_off0000dcc9.bin` `0c39d4105b34bc7038535baf7f1a41dc686318dc56dfbefe2d9a9c11b472660b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDCC9	4816 bytes
`font_01_sfnt_off0000ed32.bin` `51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED32	1800 bytes
`font_02_sfnt_off0000f5c0.bin` `1d658aa224f9309c0b7050c42631d248246de888d2bd2b39eaa00199774af29b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5C0	10544 bytes

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