PDF malware analysis — malicious · 37e89d28334dda15

MALICIOUS

PDF

44.9 KB Created: 2020-07-31 05:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bf548bf7d43c2329fb99887b58ff948a SHA-1: 6308b2deda879a168ed91f7044827dd85a78cb9c SHA-256: 37e89d28334dda152c886bfa92be9ce5c0cf3599c691d910e333276b5d69307e

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links to external PDF files, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=pdf+page+splitter+download+free', is identified as a malicious redirector. The presence of a 'download button' heuristic further supports the lure of downloading a malicious file. No scripts were extracted from this sample.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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=pdf+page+splitter+download+free
- http://files.zestnaturalmedicine.com/uploads/1/3/2/7/132740352/sanagevim.pdf
- http://files.huntsvilledecks.com/uploads/1/3/0/9/130969297/kodinupomofajitoxa.pdf
- http://files.oceancity.md/uploads/1/3/2/8/132814276/subezozox.pdf
- http://files.qeis.org/uploads/1/3/1/4/131406800/3486881.pdf
- http://files.huntsville
- https://cdn.shopify.com/s/files/1/0434/5013/8784/files/4581868174.pdf
- https://cdn.shopify.com/s/files/1/0428/2174/6847/files/wabetuv.pdf
- https://cdn.shopify.com/s/files/1/0438/0613/0337/files/22377616908.pdf
- https://cdn.shopify.com/s/files/1/0433/3505/7559/files/11091967880.pdf
- https://cdn.shopify.com/s/files/1/0427/7505/2454/files/wawazebazemide.pdf
- https://cdn.shopify.com/s/files/1/0430/4656/8098/files/kapijiwewe.pdf
- https://cdn.shopify.com/s/files/1/0434/8752/7078/files/lesedofamewinadilexepit.pdf
- https://cdn.shopify.com/s/files/1/0431/4054/6714/files/sogir.pdf
- https://cdn.shopify.com/s/files/1/0428/2312/3100/files/resolejuwiroxugososito.pdf
- https://cdn.shopify.com/s/files/1/0439/2475/0491/files/nejonogegemapalezezo.pdf
- https://cdn.shopify.com/s/files/1/0434/4568/2328/files/9608916104.pdf
- https://cdn.shopify.com/s/files/1/0432/1896/0545/files/zokenudisil.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_off000073d3.bin` `57ecb3d09124b47ef48e88e21e8aa0c4b142bd7e111c1e00d97de40746a29307`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73D3	5088 bytes
`font_01_sfnt_off00008541.bin` `1f3c6ce66337c2333b3df5de7ce67ac6f18b822b1f7404e9d3946c2a6ecf0e8c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8541	9800 bytes

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