PDF malware analysis — malicious · 219775b0a7175a33

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 20:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3085ae28e66feff41e5c8eb56a4d22d SHA-1: 03ceea80bc3e74c64e82093c7906201c47b1d52d SHA-256: 219775b0a7175a33b6ea97eb4a83f03f8e4e9ec236fd9316de17cf3a9bdb11e5

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, many of which point to Shopify domains hosting PDF files, but one critical link redirects to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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=social+and+political+philosophy+classic+and+contemporary+readings+pdf
- http://files.passionlivingmama.com/uploads/1/3/1/4/131454286/felosatawipuwi-rodivimat.pdf
- http://files.careforwildlife.org/uploads/1/3/1/4/131453188/c7d2025e70bc34.pdf
- http://files.cozyinnpetresort.net/uploads/1/3/2/3/132302802/3549785.pdf
- http://files.holes4hope.com/uploads/1/3/0/9/130969390/solofubi.pdf
- http://files.teslottawa.com/uploads/1/3/1/8/131871648/c2ad1.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdf
- https://cdn.shopify.com/s/files/1/0427/6623/7852/files/32120563048.pdf
- https://cdn.shopify.com/s/files/1/0431/7937/6798/files/kibit.pdf
- https://cdn.shopify.com/s/files/1/0432/3062/5947/files/muweposototulajevopo.pdf
- https://cdn.shopify.com/s/files/1/0431/7360/9636/files/tumumapuboluladetim.pdf
- https://cdn.shopify.com/s/files/1/0431/6889/1040/files/99917376133.pdf
- https://cdn.shopify.com/s/files/1/0434/8303/7860/files/.pdf
- https://cdn.shopify.com/s/files/1/0430/3106/8825/files/gedorogoveviduwab.pdf
- https://cdn.shopify.com/s/files/1/0429/0392/8991/files/matt_stafford_contract.pdf
- https://cdn.shopify.com/s/files/1/0439/1777/0904/files/ritipifutodekanobabotadew.pdf
- https://cdn.shopify.com/s/files/1/0435/6354/8833/files/88113798263.pdf
- https://cdn.shopify.com/s/files/1/0433/3551/6318/files/juboguzogukaliwisuvigumum.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_off00006969.bin` `a66bfbc8ce988418ad14b58158b0f397fde3444ed933aafa62280391f50e66fc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6969	5776 bytes
`font_01_sfnt_off00007cf3.bin` `f1a2b101c80724e50cbabfd9cb096a8050464e0f1ccd998918e6971729644cba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CF3	11548 bytes

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