PDF malware analysis — malicious · 0e87ab614f67a256

MALICIOUS

PDF

35.9 KB Created: 2020-09-01 02:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be8e1ca2df8003d59d08101ccab4f2f3 SHA-1: 22fd970933809facafe22028404d0f60f504b330 SHA-256: 0e87ab614f67a2567f13799e065d4e5cbf88cca8e68933e041eb5b8089cbfa5c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'hotspot login page template free'. The document body, though heavily obfuscated, contains this URL and other links to PDF files, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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=hotspot+login+page+template+free
- http://itemplet.blo
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/1a89c8_8cb060a259a9414584c4875a9ce1f376.pdf
- https://static.usrfiles.com/ugd/d43733_3a3595c79fbd4c4084a9edf43a57873a.pdf
- https://static.usrfiles.com/ugd/9b5f63_afc8faf10440469e88175f3d27be6db1.pdf
- https://static.usrfiles.com/ugd/73f3b0_e4ab25b6cb8b4831acd95efb4d330fe7.pdf
- https://static.usrfiles.com/ugd/db93e9_2abbe381d0be4c1facd6bd59b31662a8.pdf
- https://cdn.shopify.com/s/files/1/0429/5675/1002/files/rizesu.pdf
- https://cdn.shopify.com/s/files/1/0432/0477/2000/files/63048200282.pdf
- https://cdn.shopify.com/s/files/1/0428/5949/5590/files/gedema.pdf
- https://cdn.shopify.com/s/files/1/0432/9875/0629/files/mejuke.pdf
- https://cdn.shopify.com/s/files/1/0428/2620/3302/files/2075997453.pdf
- https://cdn.shopify.com/s/files/1/0432/7342/0965/files/2812600581.pdf
- https://cdn.shopify.com/s/files/1/0434/0904/7708/files/nevarib.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_off00005045.bin` `c987df3927769d491f83de65202dc047089d62c5a611e0f34cd54a33142b1f4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5045	5184 bytes
`font_01_sfnt_off000061cf.bin` `17ed8930f6a37684955ef8107e63a1afc8bbb81bbab6133f5254890322001b02`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CF	9740 bytes

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