PDF malware analysis — malicious · 641baee816872ce8

MALICIOUS

PDF

33.1 KB Created: 2020-09-02 03:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 23eae861b958d90b697a399fcc65cd78 SHA-1: d865af4f36739170a8c25bb1ebbf8e05f4364165 SHA-256: 641baee816872ce88c3b02937c8e6c0f6fd8ca409f230f9be64831417fe35980

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a redirector. The document body, though heavily obfuscated, contains text related to 'Autobahn police simulator 2 for android' and a URL that appears to be a lure. The presence of numerous external PDF links further suggests a link farm or redirection scheme designed to obscure the ultimate malicious destination.

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/pify?keyword=autobahn+police+simulator+2++for+android
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/e745be_c19665ede2a04de4bce4b2ec780f9282.pdf
- https://static.usrfiles.com/ugd/8d57bd_c6883dfe686646fc920aee82227228aa.pdf
- https://static.usrfiles.com/ugd/b8c837_741b7f6a61d14d2093375e09dc85b30b.pdf
- https://static.usrfiles.com/ugd/345929_097c0e01386c4658ac85767a569820fe.pdf
- https://static.usrfiles.com/ugd/b8c837_ecad0d7bca214b138d172fd96b1fdc1e.pdf
- https://cdn.shopify.com/s/files/1/0439/2943/6315/files/95606115181.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
- https://cdn.shopify.com/s/files/1/0435/8517/5713/files/77983449854.pdf
- https://cdn.shopify.com/s/files/1/0433/4164/3928/files/jaxirixujudupiwawuropi.pdf
- https://cdn.shopify.com/s/files/1/0450/2913/0404/files/37074273292.pdf
- https://cdn.shopify.com/s/files/1/0432/8049/8841/files/36401182300.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_off000043af.bin` `8dc0e48557e8b1f0f8e0286b78cc7c2a0f5a66bcda1b3016321406c692ebdc86`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x43AF	5656 bytes
`font_01_sfnt_off000056be.bin` `12499149003328ca32b04bc93ca190c67d1a640256e7b6a862f8ff8dfbb6c089`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56BE	9676 bytes

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