PDF malware analysis — malicious · 3ebd41c359d6d8ed

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 10:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2bec0ba45b187815a86cc197688bb0d9 SHA-1: 610638f16870db9ed03c22ad2e5c189811ca326a SHA-256: 3ebd41c359d6d8ed38ccbfb8d8d76ef39c87dca450582dcee94f3257fecae137

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'tone it up recipes protein powder' and a URL that appears to be a lure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=tone+it+up+recipes+protein+powder, which is likely used to redirect users to a malicious site. The file also contains a large number of links to static.usrfiles.com, suggesting a link farm or content delivery network used in the distribution.

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.cc/wix?keyword=tone+it+up+recipes+protein+powder
- https://static.usrfiles.com/ugd/b8c837_60f4ede20a4144f5b5a21b7249dfbbcc.pdf
- https://static.usrfiles.com/ugd/b8c837_92159ea240ab4638bb195d9e6b6e2f53.pdf
- https://static.usrfiles.com/ugd/99965f_9ad4799874464de6bf4069118ba488e9.pdf
- https://static.usrfiles.com/ugd/b8c837_5582239335634f1e99800c337b8d7263.pdf
- https://cdn.shopify.com/s/files/1/0435/3874/3450/files/27259812689.pdf
- https://cdn.shopify.com/s/files/1/0434/7287/9782/files/ainsi_parlait_zarathoustra_ebook.pdf
- https://static.usrfiles.com/ugd/b8c837_0c019b9e74c742288d9546c192187095.pdf
- https://static.usrfiles.com/ugd/db1da1_0052e449e607434e800db164ffb27960.pdf
- https://static.usrfiles.com/ugd/b8c837_c69a25be5569414c8ca8b10054670f96.pdf
- https://static.usrfiles.com/ugd/314c35_df30ece576114aecb84e60e80898ecff.pdf
- https://static.usrfiles.com/ugd/b8c837_664249c81da44ab2969ba9e06293e833.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_off00005f2a.bin` `238665a5c35c294daac8ce116ef62ed369ae0cd448609159088d23532eb12e9e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F2A	4868 bytes
`font_01_sfnt_off00006fd6.bin` `6b189d097e305eec8839a226b3e036d6c844cab7a61ea017127216a370f35dcb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FD6	10796 bytes

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