PDF malware analysis — malicious · dd36fad912a029e8

MALICIOUS

PDF

47.7 KB Created: 2020-08-21 21:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b4aee9a80e4ab0d7c57d552e1bc64ffb SHA-1: b52b000b9c16ef9b731dcb2903bc7cee5121dc73 SHA-256: dd36fad912a029e8334fe81b4b3aa2cbe81d499e99ceffc1d8c4fc6e1eee88e2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body mentions 'Pokemon 3d game offline apk', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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=pokemon+3d+game+offline+apk
- http://files.trinityplantsale.com/uploads/1/3/0/7/130776344/2151838.pdf
- http://gipavufix.lexpcc.org/uploads/1/3/0/8/130874038/31c7ea.pdf
- http://files.doulaabilene.com/uploads/1/3/0/7/130775511/jenufid-furodejuxaj-vogamopusoxesaw-pemav.pdf
- https://cdn.shopify.com/s/files/1/0429/5901/2006/files/kinulikisobetaselovo.pdf
- https://cdn.shopify.com/s/files/1/0450/3640/4900/files/17728657717.pdf
- https://cdn.shopify.com/s/files/1/0435/3651/5224/files/36492688703.pdf
- https://cdn.shopify.com/s/files/1/0438/4676/2656/files/33642131597.pdf
- https://cdn.shopify.com/s/files/1/0434/5203/9328/files/kedopewazobumenavulipi.pdf
- https://cdn.shopify.com/s/files/1/0439/3756/2779/files/wixipu.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/12758983525.pdf
- https://cdn.shopify.com/s/files/1/0432/2187/6900/files/6290763491.pdf
- https://cdn.shopify.com/s/files/1/0437/3797/2897/files/vedic_astrology_book_in_bengali.pdf
- https://cdn.shopify.com/s/files/1/0432/2318/7614/files/91597285775.pdf
- https://cdn.shopify.com/s/files/1/0436/7230/5817/files/xupofopofuwapejameserus.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000058ea.bin` `ef4ed6b5d383b82bcc2896e32e996fafc6d54e2d614cf83c03dd881d27b11966`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58EA	5316 bytes
`font_01_sfnt_off00006af1.bin` `1517daa1f280de39ac9c40764f5354b562f06c4aea327ef3c4d86fcb38c7e933`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AF1	3588 bytes
`font_02_sfnt_off00007904.bin` `c84cfe007fe959134ab6d096f797cd08d3a955e2008816bddad69a5fc081f3ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7904	10092 bytes
`font_03_sfnt_off00009bb6.bin` `0a2507360a40dd56b84230664db2b3a2689cb34b0aa642599c8245950ba374cb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BB6	16304 bytes

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