PDF malware analysis — malicious · ea129fd7f88f8cce

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 16:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba5ac9d45257a8e0af5f7d96cf5f8daf SHA-1: 034ee08dc18fee3a78677cecfff0ab0f4c1db91e SHA-256: ea129fd7f88f8cce64bf681682f4e105c5f4a8d22b828555bfc44a24ca1d36a0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to ttraff.ru, indicating malicious redirector infrastructure. The ML classifier also strongly suggests maliciousness. The document body, though heavily obfuscated, contains the same URL and keywords, reinforcing the lure.

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=the+nielsen+total+audience+report+q2+2020+pdf
- http://files.farrellheating.com/uploads/1/3/1/6/131606150/pizuxuberoximok.pdf
- http://fobemik.marcmcafee.com/uploads/1/3/1/4/131406982/dusalumidifasenejol.pdf
- http://vafino.energysmartacademy.com/uploads/1/3/1/6/131606289/5367324.pdf
- https://cdn.shopify.com/s/files/1/0428/4809/2323/files/90010168966.pdf
- https://cdn.shopify.com/s/files/1/0437/1608/3877/files/verbal_ability_tutorialspoint.pdf
- https://cdn.shopify.com/s/files/1/0428/4183/3635/files/63503140726.pdf
- https://cdn.shopify.com/s/files/1/0428/5405/6092/files/pibogogorarimufepenev.pdf
- https://cdn.shopify.com/s/files/1/0429/1071/1971/files/20780358555.pdf
- https://cdn.shopify.com/s/files/1/0436/0273/9362/files/lelof.pdf
- https://cdn.shopify.com/s/files/1/0432/0890/0768/files/mevesifonizofi.pdf
- https://cdn.shopify.com/s/files/1/0430/0757/4179/files/63602404696.pdf
- https://cdn.shopify.com/s/files/1/0429/4112/0679/files/34457051096.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdf
- https://cdn.shopify.com/s/files/1/0432/9403/2040/files/ritezofonapewulo.pdf
- https://cdn.shopify.com/s/files/1/0432/4953/3088/files/19203297242.pdf
- https://cdn.shopify.com/s/files/1/0431/6980/8548/files/wobomumaremusolafe.pdf
- https://cdn.shopify.com/s/files/1/0432/0935/9520/files/punjab_1984_full_movie.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_off00005cfc.bin` `cd73fdee93c23bb0a80cb40f1fe716dfa1c645d0a263cc78ccbd42b0daf5fb17`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CFC	5592 bytes
`font_01_sfnt_off00006ff6.bin` `fa7e7aa095b30b3e6b24a2f0239844f185d0f1c0d6adb98fe7b0de35157f48ae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FF6	10576 bytes

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