PDF malware analysis — malicious · 45bfc68c6370e792

MALICIOUS

PDF

41.3 KB Created: 2020-08-01 15:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b4ede8afa43af04472da4091a28925ed SHA-1: 5f57684f816a919d1c334bb658e3d45e9217eb12 SHA-256: 45bfc68c6370e792e82e3586880b21a694d70dfd490d583ed54d7ca6b3b9804b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised with a search query for a service manual. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO poisoning or to spread malicious content across multiple domains. The ML classifier strongly supports the malicious verdict.

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=mahindra+tractor+service+manual+pdf
- http://files.pinwellbooks.co.uk/uploads/1/3/0/7/130775357/tukabolu_nifadisogujufa_rujeku_wuzuzovuzifixob.pdf
- http://files.nancychartierstudios.com/uploads/1/3/1/4/131437285/b692ede.pdf
- http://files.dglivestock.com/uploads/1/3/0/7/130776503/jorix.pdf
- http://files.poomah.com/uploads/1/3/2/6/132681885/6956639.pdf
- https://cdn.shopify.com/s/files/1/0435/2458/7674/files/dobajewozisubav.pdf
- https://cdn.shopify.com/s/files/1/0431/7744/3483/files/zalimojalut.pdf
- https://cdn.shopify.com/s/files/1/0429/6107/6387/files/24659823954.pdf
- https://cdn.shopify.com/s/files/1/0434/0727/8238/files/maker_genome_annotation.pdf
- https://cdn.shopify.com/s/files/1/0432/0837/6482/files/velijuzafa.pdf
- https://cdn.shopify.com/s/files/1/0429/2801/3475/files/sodudakasijixeke.pdf
- https://cdn.shopify.com/s/files/1/0430/9132/9173/files/xexirujem.pdf
- https://cdn.shopify.com/s/files/1/0429/1415/2607/files/soxaranoxaxotamerav.pdf
- https://cdn.shopify.com/s/files/1/0431/9238/5700/files/gufaleranugakuresofan.pdf
- https://cdn.shopify.com/s/files/1/0434/7743/4525/files/sabakof.pdf
- https://cdn.shopify.com/s/files/1/0427/6004/4710/files/lodemawe.pdf
- https://cdn.shopify.com/s/files/1/0433/7300/2902/files/nesigifixemu.pdf
- https://cdn.shopify.com/s/files/1/0433/2408/0282/files/zelolodosoxa.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_off000062a6.bin` `337f45a280c61c89e83c0b5600f3b189d26a58ee1617050ed5eaa6d38aa4de3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62A6	5460 bytes
`font_01_sfnt_off00007520.bin` `f03acd8804f1dac9ea199b0e9ea95a9c34781b41c95513b001998053d219e9fe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7520	10420 bytes

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