PDF malware analysis — malicious · 037ad6c3ee9a7aa4

MALICIOUS

PDF

38.1 KB Created: 2020-08-31 09:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6ba2737e2308532072c53bf040fad996 SHA-1: 6e7ad6e6e17bbad0e1b2286c6ad802f1c6e5d9ba SHA-256: 037ad6c3ee9a7aa4d1d656973525352da53ddc66e2922f3536f9cd2b02656921

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to lure users to potentially harmful sites. No scripts were extracted, but the embedded links are the primary vector for malicious activity.

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.com/wix?keyword=las+guerreras+maxwell
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/3649d2_89dfbbedaf0d47fdad0e428548dbb45d.pdf
- https://static.usrfiles.com/ugd/b8c837_dc6dd03b97a1489d91a051f65fcee5ea.pdf
- https://static.usrfiles.com/ugd/b8c837_53ed3c5fc2ae476893ca132eca976b80.pdf
- https://static.usrfiles.com/ugd/930050_d476d2a29635473d93965202e7434697.pdf
- https://static.usrfiles.com/ugd/b8c837_d00699e14d084271a2a4c8d3ad75c5f0.pdf
- https://static.usrfiles.com/ugd/b8c837_0697826bc07b4bbaa386c49c0ddceb51.pdf
- https://static.usrfiles.com/ugd/48f461_58641bf890ca485aaac7495d8dfaa147.pdf
- https://cdn.shopify.com/s/files/1/0435/6410/5886/files/mowokitulon.pdf
- https://cdn.shopify.com/s/files/1/0434/6531/0373/files/pot_of_gold_plautus.pdf
- https://cdn.shopify.com/s/files/1/0431/6931/7020/files/2010193276.pdf
- https://cdn.shopify.com/s/files/1/0439/4529/6027/files/fokudonor.pdf
- https://cdn.shopify.com/s/files/1/0432/3681/9104/files/46224541556.pdf
- https://cdn.shopify.com/s/files/1/0430/8896/9882/files/bapumafagivi.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000551d.bin` `846b1fe917c44cc9a58aea4bf6b45196eb5a6286f5ab3ae0b6af96327e182115`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x551D	5108 bytes
`font_01_sfnt_off00006680.bin` `c0c2c2af44d537860ac32955bcd07602ee253e236eb7db6a88d3468feb218189`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6680	11104 bytes

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