PDF malware analysis — malicious · f10a07879dc1cf01

MALICIOUS

PDF

48.0 KB Created: 2020-07-29 22:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 03a5d3bef43f3026a330030bcafce64c SHA-1: a8ecc779069cc6bea1c6c853ef94d78aa4475e9c SHA-256: f10a07879dc1cf01d9771a44958dce25f06108f25ba2a4784a6838a4105e3daa

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to ttraff.ru, which is associated with malicious activity. Additionally, it features a link farm of numerous SEO-optimized PDFs hosted on Shopify, indicating an attempt to broaden reach. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of these links and the heuristic firings strongly suggest a delivery mechanism for phishing or malware.

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=monthly+budget+planner+pdf
- http://files.ninamariegardner.com/uploads/1/3/1/4/131406105/dizofu.pdf
- http://files.bonuselkantler.com/uploads/1/3/1/4/131452922/nurutonetedig_vuvimuzoxasa_jididegeb.pdf
- http://files.tickettoridegreatloop.com/uploads/1/3/0/8/130813860/e4101b0b03d3de.pdf
- http://files.phillipquinlan.com/uploads/1/3/1/6/131607712/xekekiludesozudogojo.pdf
- http://files.nineravensstudio.com/uploads/1/3/0/8/130813755/3377f8ff64dbb.pdf
- http://files.tickettoridegreatloop.com/uploa
- https://cdn.shopify.com/s/files/1/0429/2263/9527/files/33492286605.pdf
- https://cdn.shopify.com/s/files/1/0431/5689/7947/files/jixitorosazuzadobo.pdf
- https://cdn.shopify.com/s/files/1/0431/1298/8821/files/70002673088.pdf
- https://cdn.shopify.com/s/files/1/0431/8488/1825/files/zokaxopifekotobodanugoxef.pdf
- https://cdn.shopify.com/s/files/1/0433/6913/6280/files/42799837548.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
- https://cdn.shopify.com/s/files/1/0440/2115/3957/files/32040278996.pdf
- https://cdn.shopify.com/s/files/1/0437/9266/2688/files/dabok.pdf
- https://cdn.shopify.com/s/files/1/0431/2236/0481/files/65355392280.pdf
- https://cdn.shopify.com/s/files/1/0430/6989/8909/files/retexajofib.pdf
- https://cdn.shopify.com/s/files/1/0438/4430/5061/files/39359283312.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_off00007c83.bin` `675be1d46eb6ae3e4313bf4508a20245997cdd2da85b76c2c1e510cb2dd2931d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C83	5208 bytes
`font_01_sfnt_off00008e38.bin` `129863aaba9a6cbe4ea16e92e243d52604dfb59497f4fba672e1af9870b3eb28`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E38	10620 bytes

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