PDF malware analysis — malicious · 6b06097b3a84a546

MALICIOUS

PDF

66.1 KB Created: 2020-09-08 19:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0e6a980dce1860c65b7741236e53240d SHA-1: 3c7f4176840cf7ba9948e105890d612f17d27281 SHA-256: 6b06097b3a84a546430b875c751b8bf73a273f0b7fa71f59a0109383fddc12bc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as an iOS developer beta download, which points to a known malicious redirector. The ML classifier strongly indicated maliciousness, and the document body, though heavily obfuscated, contains the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute the malicious content.

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.club/wix?keyword=ios+13+developer+beta+5++link
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/a32c20_3c2e27a92a7542acb464952a3d75dfff.pdf
- https://static.usrfiles.com/ugd/e4ee87_9e4c5397aeba497c9f5dbc098869538c.pdf
- https://static.usrfiles.com/ugd/9c0842_373a4739ab4c4ebb936872c90dcfde0b.pdf
- https://static.usrfiles.com/ugd/2eec94_15bc9afc7e8545d8b214edf8b14d1e60.pdf
- https://static.usrfiles.com/ugd/40336e_640feda00d134fb2b52d8d4e152996fe.pdf
- https://static.usrfiles.com/ugd/a32c20_8c39e84c12704f55903946a378e1ed76.pdf
- https://static.usrfiles.com/ugd/6908d7_d4c83299fe244f95b7a779405b91de48.pdf
- https://static.usrfiles.com/ugd/87ad98_3a6edd5303f3486c96c57569832e52f6.pdf
- https://static.usrfiles.com/ugd/e8dba5_27bd069372b54106a4297126aa80b5a1.pdf
- https://cdn.shopify.com/s/files/1/0433/2604/6362/files/85513206730.pdf
- https://cdn.shopify.com/s/files/1/0433/1444/6489/files/excel_bedingte_formatierung_wenn_zelle_link_enthlt.pdf
- https://cdn.shopify.com/s/files/1/0432/9439/2485/files/97581703394.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_off0000c056.bin` `06d9d01fdc950380c4d5c25572eb4ba1c83d98f499d8255c2f601f3246fb923f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC056	5496 bytes
`font_01_sfnt_off0000d31a.bin` `c253754a6a255dfbb0a66cc1784e1199d38fb3a7fca5fd1d9444df92626e1a62`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD31A	12060 bytes

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