PDF malware analysis — malicious · 1ba12374086f50a9

MALICIOUS

PDF

38.8 KB Created: 2020-08-29 17:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6409e40ca01320f768ea46670c2f7df7 SHA-1: 5167adcacfba94e73c3231f4ea728553ec956c28 SHA-256: 1ba12374086f50a96dad584d6bcaacb25dde52032ef816c6d7675cd6bac52965

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with one specifically pointing to a known malicious redirector. The primary heuristic indicates the PDF links to malicious redirector infrastructure, and the embedded URL confirms this. The document body, though heavily obfuscated, contains the URL that is also flagged by heuristics. The presence of many links suggests an attempt to manipulate SEO or redirect users to potentially harmful content.

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/wix?keyword=bendix+air+compressor+service+manual
- https://static.usrfiles.com/ugd/b8c837_44a1880fd20142babd4d7fba13e2c0b5.pdf
- https://static.usrfiles.com/ugd/b8c837_4afb3c349ff24f3daa47911c1e51b0c1.pdf
- https://static.usrfiles.com/ugd/b8c837_b54af7284e2742e0954661e892b50118.pdf
- https://static.usrfiles.com/ugd/b8c837_07761a20b169468d989b6dfce4f0a24c.pdf
- https://static.usrfiles.com/ugd/b8c837_9626813987cf4cf2a2853db0e124cfbc.pdf
- https://static.usrfiles.com/ugd/b8c837_cd31798b65f74e049e28ef47aaf0e64e.pdf
- https://static.usrfiles.com/ugd/0a593f_9cd9f3cd42a541b39ad8881d916bc01b.pdf
- https://static.usrfiles.com/ugd/c3548c_bf7dd0491b924303a6ec220d1a5b9660.pdf
- https://static.usrfiles.com/ugd/b8c837_98f4388ee5e94d30af131694b62b071d.pdf
- https://static.usrfiles.com/ugd/b8c837_8229140aaf0b41858f7c244115af44ea.pdf
- https://static.usrfiles.com/ugd/b8c837_38281d21d2b74252840743180cf1cba7.pdf
- https://static.usrfiles.com/ugd/accd1f_abbf4e2ecf7d48d49017dfc967c4e77c.pdf
- https://static.usrfiles.com/ugd/b8c837_4f5505025d5b4854ab95cd8b73e34d04.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdf
- https://cdn.shopify.com/s/files/1/0438/2133/4690/files/defense_industrial_base_report_2018.pdf
- https://cdn.shopify.com/s/files/1/0438/2995/2674/files/raxirovofetobin.pdf
- https://cdn.shopify.com/s/files/1/0431/9703/8756/files/zora_neale_hurston_their_eyes_were_watching_god.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_off000057ca.bin` `fc5a7c75a8da36a776856f5da96c950ea07c757202847f2d05921b29b042b68e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57CA	5396 bytes
`font_01_sfnt_off00006a0b.bin` `653474e0ee073e4aafc9a28e370a8e8ed16d64e47fe71f4265c7ba30a7bf5c76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A0B	10236 bytes

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