PDF malware analysis — malicious · c6c5545ebf5d86f8

MALICIOUS

PDF

43.9 KB Created: 2020-08-31 22:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 378719fbc9b0d4346baf5268c38153c7 SHA-1: 7f49e8b357043fb96ec714a863fed2ba5f82d9d0 SHA-256: c6c5545ebf5d86f8b276e31668164e3e9a39e5f7f81a240a2881ba36e72930d1

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious content. The document body, though heavily obfuscated, contains text related to a movie and the redirector URL, suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to distribute malicious links.

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=babylon+full+movie
- https://static.usrfiles.com/ugd/cf79db_48a3bac6cce64a09b146272c573baefa.pdf
- https://static.usrfiles.com/ugd/eb6612_e274446c3ce94118ba8c68618fbcb8f9.pdf
- https://static.usrfiles.com/ugd/b47706_5560bbbe498140a799cabf384182ef2e.pdf
- https://static.usrfiles.com/ugd/e2f7e1_676e8c67a32e421792b5c1f245314290.pdf
- https://static.usrfiles.com/ugd/b8c837_6284ee5ef7f74cc293fa6d99cbb42d45.pdf
- https://static.usrfiles.com/ugd/93c935_492c37b0ccde424aa8d6b6c26498ebd4.pdf
- https://static.usrfiles.com/ugd/79e5df_38d819baf430496f9cba475781978d1c.pdf
- https://static.usrfiles.com/ugd/b8c837_6bde1bf4d48645b9821b20ead62ea58b.pdf
- https://cdn.shopify.com/s/files/1/0431/0233/9232/files/mevemuvisatalezimowa.pdf
- https://cdn.shopify.com/s/files/1/0439/1596/8667/files/autocad_2020_tutorial_indonesia.pdf
- https://cdn.shopify.com/s/files/1/0433/7854/0700/files/river_island_size_guide_dress.pdf
- https://cdn.shopify.com/s/files/1/0430/3765/5191/files/polurawikosasudaborobele.pdf
- https://cdn.shopify.com/s/files/1/0428/5952/8355/files/pronunciation_guide_for_foreign_names.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_off00006efe.bin` `1449d954ddaf6d20255ee27918316f1d6e7812a155054a8bed45037192566037`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EFE	4988 bytes
`font_01_sfnt_off00008000.bin` `16981eed237c45cc72e0c1d78a35bf7aa3f37eb0bf5056f6fc5fe84a363e16c8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8000	10248 bytes

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