PDF malware analysis — malicious · 73652abf5eb71814

MALICIOUS

PDF

80.5 KB Created: 2020-09-09 07:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 39358dfc2e0590c4d0ef1b3364152a29 SHA-1: c18b6ac13d4abb6ea3ffa47ab3df761500e52f2b SHA-256: 73652abf5eb71814494b1406dc4a74ab9729c0c584da680ff9793f5df2107c54

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect users to malicious content, likely a phishing page or malware download.

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=anabolic+running+free+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/4614/1093/files/concrete_admixture_seminar.pdf
- https://cdn.shopify.com/s/files/1/0466/3371/3829/files/microsoft_office_business_plan_template_free.pdf
- https://cdn.shopify.com/s/files/1/0437/5330/8314/files/leveled_guided_reading_questions.pdf
- https://cdn.shopify.com/s/files/1/0430/2651/4077/files/59589665163.pdf
- https://cdn.shopify.com/s/files/1/0429/5193/4108/files/xadogi.pdf
- https://static.usrfiles.com/ugd/6846fe_17efa82cbc0d4daeb607e8c036617c6c.pdf
- https://static.usrfiles.com/ugd/bb13a2_03a2b51d19534e649daa36a4f997c8b7.pdf
- https://static.usrfiles.com/ugd/f3ecbe_9b6c6cf4f915425bb213997338c15c3b.pdf
- https://static.usrfiles.com/ugd/003b86_3cc14bd929f14228893ea9332c1e7a93.pdf
- https://static.usrfiles.com/ugd/cbe7f7_1170ac176132447f9d57799b069d198d.pdf
- https://static.usrfiles.com/ugd/26481d_9a506194cc9b468395352ba6704476f4.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_off0000fe93.bin` `05cd0b6c33a636ffe6e7982f2c0f98e783843db3471425411070b9da02d3346a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE93	5272 bytes
`font_01_sfnt_off00011091.bin` `c50aa26b93fbdc293fe6da40a82fe49785986a356001a77211ca78ecef82f4f5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11091	10728 bytes

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