PDF malware analysis — malicious · 12073f9327b9a17f

MALICIOUS

PDF

37.4 KB Created: 2020-09-05 08:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 390e7cdd17b667c834b2ded4a377d643 SHA-1: a61f48f8af52657029d3edd007e3a864c14508d2 SHA-256: 12073f9327b9a17f0270844cc3ada94e77aa5913729b5d54401999ef352c01d5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.me/pify?keyword=bekaboo+web+series++movieflix', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure.

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.me/pify?keyword=bekaboo+web+series++movieflix
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/808d8c_f4bf1f5f518a475289080f355772ee27.pdf
- https://static.usrfiles.com/ugd/37428b_48fa8979586f4d87805bd66521d38acd.pdf
- https://static.usrfiles.com/ugd/6da380_00b2f2bb55644f5da0d99e707d63dd5b.pdf
- https://static.usrfiles.com/ugd/9df9d6_3b5499f2f1184711a447f356c7fe8c75.pdf
- https://cdn.shopify.com/s/files/1/0431/7410/1160/files/47514965821.pdf
- https://cdn.shopify.com/s/files/1/0438/4774/5698/files/67094424437.pdf
- https://cdn.shopify.com/s/files/1/0436/7430/4662/files/tagosapix.pdf
- https://static.usrfiles.com/ugd/b50c55_62d8496bf4c945a28a2655280bbf5961.pdf
- https://static.usrfiles.com/ugd/3b5dd9_44b6cbd8692145de9e79020904165a0a.pdf
- https://static.usrfiles.com/ugd/b8c837_e51e4b763c4d4ca480252d4b11fa2a4e.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_off00005404.bin` `b4c6bbf694d5e1a889fd0d8c4755a77037cfcbd01568d2d6cc6e5fcfff3ca779`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5404	5384 bytes
`font_01_sfnt_off00006664.bin` `afa8352453b249a3e5c75e1c9795bf1d8fcb2f22c006389dec68cb8af4945510`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6664	10192 bytes

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