PDF malware analysis — malicious · 2c991f6a266f64db

MALICIOUS

PDF

52.2 KB Created: 2020-08-15 14:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bc8b51f196e8a0ab9dbee187e6762041 SHA-1: af80cac9fcffd6a1d85a80d3d167ba674e6d4633 SHA-256: 2c991f6a266f64dbaed891406451dc40392a2bfc41e983ff1c340f45a4f1b5c7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with a large number of embedded external links. One of these links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination and potentially deliver malware or phishing content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond link redirection.

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=build-+essential+ubuntu+package
- http://files.ellwoodcityelementarypto.org/uploads/1/3/0/7/130775205/bf02e56d6a.pdf
- https://cdn.shopify.com/s/files/1/0434/7746/7288/files/tilexafadoxiwafilurujojib.pdf
- https://cdn.shopify.com/s/files/1/0429/9957/8773/files/ravebolisufo.pdf
- https://cdn.shopify.com/s/files/1/0435/7786/8443/files/woxax.pdf
- https://cdn.shopify.com/s/files/1/0433/9249/9877/files/41115808536.pdf
- https://cdn.shopify.com/s/files/1/0431/8792/9245/files/99272829151.pdf
- https://cdn.shopify.com/s/files/1/0434/1055/5041/files/bemonc_manual.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/52856613639.pdf
- https://cdn.shopify.com/s/files/1/0430/0655/8359/files/70614685349.pdf
- https://cdn.shopify.com/s/files/1/0433/8280/0542/files/74035417226.pdf
- https://cdn.shopify.com/s/files/1/0439/0918/5688/files/82278837964.pdf
- https://cdn.shopify.com/s/files/1/0433/6641/6534/files/ripudutitabukuj.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/
- https://cdn.shopify.com/s/files/1/0435/7786/8443/fi

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006fd1.bin` `a169c91fd8cd93e8b33e056af1a64b9c3e89b6d1fabf119f24ea8fb1884b4fc6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FD1	3576 bytes
`font_01_sfnt_off00007cb5.bin` `cbf2b7df7e2effac0b72a2d4b1487106811c21bcd9924abcf0d7fc800c0e5c4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CB5	5204 bytes
`font_02_sfnt_off00008e6e.bin` `384e69ccd52c28414d2fea63a946f105e79584fbe2dcda8ab8bbf9f01cec997b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E6E	11376 bytes
`font_03_sfnt_off0000b529.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB529	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.