PDF malware analysis — malicious · 595a26ed818755af

MALICIOUS

PDF

43.7 KB Created: 2020-08-13 19:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3d1c69a3e18e98a3bd5c5d113796f1fe SHA-1: b912ad456b5229e97792e14234242118018e4739 SHA-256: 595a26ed818755af1acaf368d70921360d6032527c48dfe22fd67036c1ca58fc

120 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 external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.ru'. This suggests the document is designed to lead users to malicious content through a link farm. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the payload beyond the redirection.

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/wb?keyword=dependency%20graph%20in%20compiler%20design%20pdf
- http://juzavovu.habamania.com/uploads/1/3/1/1/131164250/nofesoge-fimaxekuzi-kebel.pdf
- http://files.dressage.us/uploads/1/3/2/6/132681145/c3da4f8ca8.pdf
- http://files.joantenenbaum.com/uploads/1/3/1/8/131871980/0463961cd1451c3.pdf
- https://cdn.shopify.com/s/files/1/0438/7723/6904/files/muxivatenu.pdf
- https://cdn.shopify.com/s/files/1/0434/2887/2359/files/nubopesupuzoromiven.pdf
- https://cdn.shopify.com/s/files/1/0430/5109/0077/files/68847461013.pdf
- https://cdn.shopify.com/s/files/1/0428/1604/5222/files/2126160303.pdf
- https://cdn.shopify.com/s/files/1/0431/3756/4839/files/rabonopuxumavezi.pdf
- https://cdn.shopify.com/s/files/1/0434/1586/3447/files/brazing_vs_welding.pdf
- https://cdn.shopify.com/s/files/1/0434/1845/2120/files/4246112685.pdf
- https://cdn.shopify.com/s/files/1/0435/1338/1028/files/64871472166.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdf
- https://cdn.shopify.com/s/files/1/0435/5509/4677/files/nokeboredudenag.pdf
- https://cdn.shopify.com/s/files/1/0429/5399/8487/files/55151670016.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_off00004886.bin` `d89d59903be3c38b6d39711a5619c6c500bb9ef38f647ae8a92ae8fbd707a80c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4886	5376 bytes
`font_01_sfnt_off00005a9c.bin` `fb6eeee79b9ec474e0982bc5de9862b68fa082f7898df68d808aa5d0154b96b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A9C	9952 bytes
`font_02_sfnt_off00007cda.bin` `301eb23df72b2b4c0edcba47673bba95b8509d30b76da4b041c09a986d729e2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CDA	16484 bytes
`font_03_sfnt_off00009348.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9348	4324 bytes

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