PDF malware analysis — malicious · bd10080a8345ef23

MALICIOUS

PDF

46.6 KB Created: 2020-08-04 14:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b3306c9a38031cf876776d648e6066b2 SHA-1: cb4ef004f04ce2e156c3659ba2395243ef916f1a SHA-256: bd10080a8345ef23e1852461da1bc3aecbd9512630b8b6854183fb9869e6b85c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bridge+to+terabithia+vocabulary+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting an attempt to manipulate search engine results or distribute further 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.cc/pify?keyword=bridge+to+terabithia+vocabulary+pdf
- http://files.noon.rs/uploads/1/3/0/9/130969494/fbf29b7b.pdf
- http://files.artbylucymott.studio/uploads/1/3/0/8/130873872/ab769db3e.pdf
- http://files.breathingspacecounsellingpractice.com/uploads/1/3/2/7/132712040/6a56c9649c6.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
- https://cdn.shopify.com/s/files/1/0436/2525/0974/files/ginikesokinonavaze.pdf
- https://cdn.shopify.com/s/files/1/0440/7354/9974/files/60784285289.pdf
- https://cdn.shopify.com/s/files/1/0434/4800/8866/files/vusorisivis.pdf
- https://cdn.shopify.com/s/files/1/0427/5005/0460/files/mcmlxxviii_roman_numerals.pdf
- https://cdn.shopify.com/s/files/1/0429/0802/4985/files/73590393656.pdf
- https://cdn.shopify.com/s/files/1/0431/2861/9168/files/tovud.pdf
- https://cdn.shopify.com/s/files/1/0428/1496/3868/files/20392794163.pdf
- https://cdn.shopify.com/s/files/1/0434/6429/4557/files/wigupotumujovivir.pdf
- https://cdn.shopify.com/s/files/1/0437/1791/8870/files/ball_badminton_new_rules_and_regulations.pdf
- https://cdn.shopify.com/s/files/1/0432/2613/6743/files/67734007353.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_off000060d8.bin` `fe70a576dfa010660c7952b41ab67c41dae5ad1da54d654d79cc182eedcd8182`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60D8	5592 bytes
`font_01_sfnt_off000073e8.bin` `46f82e1ae6a33a29e790654c0cfabaa10efaa969e8a709cfaaf31579da0c5265`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73E8	10540 bytes
`font_02_sfnt_off00009831.bin` `e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9831	16092 bytes

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