PDF malware analysis — malicious · f77fe561279a637f

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 17:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b874c1ca287eec4312eb2168ee433169 SHA-1: 6d9366e4482180e5bc30df511fc2b8a279302cce SHA-256: f77fe561279a637fcf0d90c2b982a01be6d942e408f55249ede2cb51026ee765

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.cc/pify?keyword=annual+report+template. The document body, though heavily obfuscated, contains references to 'annual report template' and the tool 'wkhtmltopdf', suggesting a lure document. The ML classifier also strongly indicated maliciousness.

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=annual+report+template
- http://files.medinacountytreasurernews.com/uploads/1/3/0/8/130813855/japupogipafibidimib.pdf
- http://files.martynjenkins.com/uploads/1/3/0/7/130776200/tidonipuzisir-barumubojapop-wumofofokakopon-pokoxa.pdf
- http://firag.trvpc.com/uploads/1/3/1/4/131437237/xozilepesuvib_vemorumobape_reluzidogez.pdf
- http://xatupadaf.riseabovepartners.com/uploads/1/3/1/4/131453870/tuzafidumuvapom.pdf
- https://cdn.shopify.com/s/files/1/0435/4077/5064/files/benepulenofu.pdf
- https://cdn.shopify.com/s/files/1/0434/6295/1077/files/kewuzekeratupibusiriv.pdf
- https://cdn.shopify.com/s/files/1/0428/9291/8937/files/beaver_badge_book.pdf
- https://cdn.shopify.com/s/files/1/0434/2346/5628/files/boravube.pdf
- https://cdn.shopify.com/s/files/1/0435/9861/0591/files/gosikizot.pdf
- https://cdn.shopify.com/s/files/1/0436/8610/1145/files/49459291513.pdf
- https://cdn.shopify.com/s/files/1/0428/4314/4355/files/34669102470.pdf
- https://cdn.shopify.com/s/files/1/0432/2348/2525/files/jspdf_autotable_font_style.pdf
- https://cdn.shopify.com/s/files/1/0449/3164/5608/files/pevegagipezerulurekagefu.pdf
- https://cdn.shopify.com/s/files/1/0431/1423/4013/files/pegaliforabukij.pdf
- https://cdn.shopify.com/s/files/1/0429/5720/9766/files/xaguxitidavozorud.pdf
- https://cdn.shopify.com/s/files/1/0429/1143/2857/files/94837038956.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_off0000739a.bin` `95aa4b4cd30427872250555845ae4b398a7ff689cd0d27f16ba62ebd21c2ca1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x739A	4776 bytes
`font_01_sfnt_off000083b4.bin` `124815d8e263f0d0b9c7c6353bfaef3af061659e50d204c2bf0bc05d8836c30f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83B4	10116 bytes

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