PDF malware analysis — malicious · 56ad9aa9a6bc3871

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 01:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab41021e78881ab0bd70b0ad1001c606 SHA-1: b08d910ffe5b45b4fd6a1eb3ee5087aed8a59698 SHA-256: 56ad9aa9a6bc387143ff0889715547dee69988e3503534abdf963bff1a73cb34

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, also contains the same redirector URL and a large number of other URLs, suggesting a link farm or SEO poisoning attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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/wix?keyword=practice+10.1+areas+of+parallelograms+and+triangles+answers
- https://static.usrfiles.com/ugd/b8c837_6bde1bf4d48645b9821b20ead62ea58b.pdf
- https://static.usrfiles.com/ugd/b8c837_e7a8f57579a54e8bb5522ce5f8d24548.pdf
- https://static.usrfiles.com/ugd/5b9a87_adbd3f3c8b5444fda5ef24b620e16a9f.pdf
- https://static.usrfiles.com/ugd/ca9b0a_13bfba529cca4994adcc966f3884e00e.pdf
- https://static.usrfiles.com/ugd/1e32c2_69d700112b40455bbf46afbee8cc8021.pdf
- https://static.usrfiles.com/ugd/e3c460_c03f0ef13c474af5aee5156b93020629.pdf
- https://static.usrfiles.com/ugd/b8c837_76881a6c76af480785f015fecb06af56.pdf
- https://static.usrfiles.com/ugd/b8c837_6938b56e0ada4c10b1e4f861b6c83288.pdf
- https://cdn.shopify.com/s/files/1/0427/7701/8524/files/nonenonixobubodivotinis.pdf
- https://cdn.shopify.com/s/files/1/0433/1264/4251/files/understanding_and_using_english_grammar_2nd_edition_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0453/2423/9003/files/access_control_technologies.pdf
- https://cdn.shopify.com/s/files/1/0440/9350/5688/files/scofield_reference_bible.pdf
- https://static.usrfiles.com/ugd/dd4472_4c1c36d6153b4b8cacfe0395e70f63d4.pdf
- https://static.usrfiles.com/ugd/6240f8_e7f01043fbb54217af27f2cd1270bfdd.pdf
- https://static.usrfiles.com/ugd/b8c837_09866f46679549229b369d8bef85c2c7.pdf
- https://static.usrfiles.com/ugd/5899d5_b44795c4497149419dab7e8c88097e03.pdf
- https://static.usrfiles.com/ugd/b8c837_96a059437a0649ac9aaf8f377b63c9d4.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_off000075cb.bin` `1f9f4b3daac592617cbd0fed3bd443f5b2c115109aa78eaf4aed3751b52a231a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75CB	5796 bytes
`font_01_sfnt_off00008985.bin` `8c61423be71697889d99fbc35bed5efafa3b82e32c1354797edd6ad45a1ca818`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8985	12924 bytes

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