PDF malware analysis — malicious · 1038ada2b278f267

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 21:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 68866165a6f30d92286c22951ceb5bf2 SHA-1: 9d72bccf41f5a4b1e9cb77201e98279a828e4e9c SHA-256: 1038ada2b278f267c39ba4a0b049ced6207a00ec4d104f2b6dc37b0b0b9fd1f5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, one of which, 'https://ttraff.com/wix?keyword=auto+tagging+and+manual+tagging', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous links to other PDFs hosted on Shopify and static user file sites. This suggests an attempt to direct users to malicious content or potentially a phishing site.

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=auto+tagging+and+manual+tagging
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/3382/9277/files/xanilesujenekebiz.pdf
- https://cdn.shopify.com/s/files/1/0431/2589/9426/files/87065191215.pdf
- https://cdn.shopify.com/s/files/1/0433/7877/0076/files/tamixamutinogoroso.pdf
- https://static.usrfiles.com/ugd/b8c837_53a242ddfb664530a6fc47c840efeb9d.pdf
- https://static.usrfiles.com/ugd/3f0e57_b4827af93d7c4d73b565e066a3af5d5a.pdf
- https://static.usrfiles.com/ugd/21a131_ef2f4510c14442d3bc93230b961174dd.pdf
- https://static.usrfiles.com/ugd/e33828_062e717271b249f9826a1e376b8f8f28.pdf
- https://static.usrfiles.com/ugd/f4de5e_ef38c690fb1f4a20bb595294222be13f.pdf
- https://static.usrfiles.com/ugd/3e5d97_4832ae7c36bc426583f4b9facbebaf8e.pdf
- https://static.usrfiles.com/ugd/97368a_99cf686b30614a1a9be8124511529c5a.pdf
- https://static.usrfiles.com/ugd/c0fca2_0450a0da34444bf08d998c10b52d5e54.pdf
- https://static.usrfiles.com/ugd/f3ecbe_f822beb235da4e008da400b251f4d944.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_off000078fb.bin` `4528b57d3260b571f19537e616a8373c97038ab39b8cd98a92b1c84e6e1751ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78FB	4860 bytes
`font_01_sfnt_off00008973.bin` `10107dd46fc4225a4b5856dbc5730a6df0a6571401f19c3257e4b0c9b995a2a4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8973	11796 bytes

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