PDF malware analysis — malicious · 41ec267281b55da4

MALICIOUS

PDF

41.4 KB Created: 2020-08-23 15:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b5cf5b3e735f2c45911540c8ed363d43 SHA-1: 7813be72e0b3e7b08435be2a03849d6bdaad7e53 SHA-256: 41ec267281b55da4dc8a7ba0b7d5ec29fb4025691b0785ad0f046dd8bddacecc

158 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded JavaScript and multiple external links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=colors+marathi+tv+show'. The document body also contains this URL, suggesting it is the primary lure. The presence of embedded JavaScript and numerous links, many hosted on Shopify, indicates a likely attempt to distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious verdict.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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 JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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.cc/pify?keyword=colors+marathi+tv+show
- http://files.peterpactor.net/uploads/1/3/1/4/131483249/cbb007b3a9.pdf
- http://suter.ddmobilemarineservices.com/uploads/1/3/2/7/132740405/7246179.pdf
- http://guvefap.ndsportschannel.com/uploads/1/3/1/3/131379478/wusogepesifefe-timevijatefa-tilijipozoki-xiwawaxariduki.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdf
- https://cdn.shopify.com/s/files/1/0428/0785/3223/files/bidebefijofumoxol.pdf
- https://cdn.shopify.com/s/files/1/0431/4418/3970/files/zuzenumake.pdf
- https://cdn.shopify.com/s/files/1/0429/2876/7143/files/53481254395.pdf
- https://cdn.shopify.com/s/files/1/0434/0790/0835/files/62661535798.pdf
- https://cdn.shopify.com/s/files/1/0464/5073/7320/files/fafevexazuxunorozadu.pdf
- https://cdn.shopify.com/s/files/1/0430/0252/7895/files/21635047109.pdf
- https://cdn.shopify.com/s/files/1/0434/5420/2013/files/cassio_wk_500.pdf
- https://cdn.shopify.com/s/files/1/0427/7560/9510/files/43373657833.pdf
- https://cdn.shopify.com/s/files/1/0433/1434/8197/files/39928588457.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_off000058c4.bin` `addeaaa32420f6c1faf453118c6b2dbf4876aead4842d2102b2f5cffffb5c1e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58C4	4980 bytes
`font_01_sfnt_off00006998.bin` `7912a16fe5dc5dc8ac104bc8af167e1b98a371b566342d6eef1dab0adb108043`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6998	10008 bytes
`font_02_sfnt_off00008c17.bin` `8e68bf71551906270a97d714bd58520f15b2ace0151e007f315e484c39424105`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C17	3276 bytes

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