PDF malware analysis — malicious · a0bb021711e8bb2b

MALICIOUS

PDF

61.7 KB Created: 2020-09-01 21:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f2f454247fa633318710234f7e9787eb SHA-1: e750d8ab2324fa4297ce78d59980b424cb0db6ba SHA-256: a0bb021711e8bb2b3138e0b71c86c508eb911f9140c8c34a7db8290d41ad46a3

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded URLs, 24 of which are generated SEO PDF links. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be luring users through deceptive content or SEO tactics to click on malicious links.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=freeform+channel+christmas+movies+2018
- https://cdn.shopify.com/s/files/1/0428/2961/1171/files/73124465331.pdf
- https://cdn.shopify.com/s/files/1/0430/0088/9507/files/collar_penal_arrastrando_un_peso.pdf
- https://cdn.shopify.com/s/files/1/0434/3113/3351/files/cv_maker_templates.pdf
- https://cdn.shopify.com/s/files/1/0435/0751/5558/files/82947315505.pdf
- https://cdn.shopify.com/s/files/1/0431/0476/4068/files/tuwaguw.pdf
- https://static.usrfiles.com/ugd/6203b9_3ddee6c981f54296b7c929186e0dfa90.pdf
- https://static.usrfiles.com/ugd/d48fe3_2e6307f3d9894757be679e07ceb89f2d.pdf
- https://static.usrfiles.com/ugd/b8c837_bffe960db9a440b49904ed44d1a28be5.pdf
- https://static.usrfiles.com/ugd/2b25e8_56c4b4ef70e54334b3e8204e9d771346.pdf
- https://static.usrfiles.com/ugd/0c4177_96600b435218460899014579c61a6e53.pdf
- https://static.usrfiles.com/ugd/b8c837_1a9b832ce99c473fb8a95568f8a7f68f.pdf
- https://static.usrfiles.com/ugd/57c819_c2c6fdd0ad0d4c038dfd95b79ca8fe8b.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_off0000b203.bin` `17c5633abebf329211e8f30f1ecdbbe3bf59cb823043b0262ecc0c1a344b9e25`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB203	5656 bytes
`font_01_sfnt_off0000c51e.bin` `51a53e3d8f470e2f09c6689bac3a75dbeb2405c163403502a997c7720ed5e214`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC51E	10704 bytes

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