PDF malware analysis — malicious · 2fb6630bdcd465de

MALICIOUS

PDF

38.6 KB Created: 2020-08-30 09:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1bc978ba1503b118cab6cc239c2cedc4 SHA-1: eb5ac25ca08d41775417bb0637c20a47247cdf33 SHA-256: 2fb6630bdcd465de6023827a9e7a9ee6e137874fb8a8a587a04b9ed67d607cf6

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily garbled, contains the same URL and text related to 'free wwe catalogs', suggesting a lure. The PDF also exhibits a link farm behavior, with numerous embedded URLs, many of which point to 'static.usrfiles.com'. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload.

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=free+wwe+catalogs
- https://static.usrfiles.com/ugd/b8c837_f6669a76336f4ab58e9517c4f2a0b01a.pdf
- https://static.usrfiles.com/ugd/b8c837_6ca6542135bd4338936826dc674c0e5c.pdf
- https://static.usrfiles.com/ugd/b8c837_36d5bb7b602e4182b67b03335d90b34f.pdf
- https://static.usrfiles.com/ugd/b8c837_ce009ef657864d7f8b0a84db86214aba.pdf
- https://static.usrfiles.com/ugd/2b3f46_7bb927d7ca0e42559ddfbf3029b9cf10.pdf
- https://static.usrfiles.com/ugd/5438e3_cfeb8b17270c441f8fca77532704d704.pdf
- https://static.usrfiles.com/ugd/b8c837_cb993aec78354c05bc22b84878ffdd64.pdf
- https://cdn.shopify.com/s/files/1/0431/7950/7880/files/76720531151.pdf
- https://cdn.shopify.com/s/files/1/0431/1020/3556/files/bibosufoxijoxurog.pdf
- https://cdn.shopify.com/s/files/1/0437/6887/3112/files/mere_naal_tu_whistle_song.pdf
- https://cdn.shopify.com/s/files/1/0437/7686/8504/files/36260613657.pdf
- https://cdn.shopify.com/s/files/1/0432/1997/6350/files/petewanaxapupazafot.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_off00005ad3.bin` `272cbcd8820cf392c8c5ecef0bb4d2bea1941c8dcce1c56758643d34977f5d5a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AD3	5012 bytes
`font_01_sfnt_off00006c04.bin` `8b0bd9464cb05efa46cb317a0f3a63ce134f90b08c9d43d981034036956a2fea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C04	9956 bytes

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