PDF malware analysis — malicious · 0f4492dc7f2eca40

MALICIOUS

PDF

39.2 KB Created: 2020-09-05 14:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e4134b9b309a4e5ff34ae3025bb0eb01 SHA-1: 7e362e3b4c2aaeef1d5af0a3709094550fe5389c SHA-256: 0f4492dc7f2eca4023fae38e87c7b8cc3871ee9d1680001677997ab45df36c12

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'school uniform' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of many external PDF links also indicates a link farm, likely for SEO manipulation or to host further 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.link/wix?keyword=blessed+trinity+school+uniform
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0440/3894/6981/files/jibisedizez.pdf
- https://cdn.shopify.com/s/files/1/0431/5018/0514/files/facebook_invite_all.pdf
- https://cdn.shopify.com/s/files/1/0433/9544/8999/files/46117726836.pdf
- https://cdn.shopify.com/s/files/1/0433/7503/4524/files/3022667836.pdf
- https://cdn.shopify.com/s/files/1/0435/4798/4026/files/fosobudimuvaraforifizut.pdf
- https://static.usrfiles.com/ugd/07e02c_2f94077c0e7d4d5493536c25379e11f8.pdf
- https://static.usrfiles.com/ugd/b8c837_3fbf20b3a4684a5ba762c53a39b1ad9c.pdf
- https://cdn.shopify.com/s/files/1/0433/3161/6923/files/tx400_treadmill_owners_manual.pdf
- https://cdn.shopify.com/s/files/1/0429/8326/0314/files/fozatokezizidafatado.pdf
- https://cdn.shopify.com/s/files/1/0433/3069/9414/files/47440249612.pdf
- https://cdn.shopify.com/s/files/1/0432/2230/2888/files/75220461635.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_off00005c42.bin` `93e73f2931846b6b910f802eef8a5e517e398c707a8bab85e27af9ef7c7e21a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C42	5200 bytes
`font_01_sfnt_off00006dd2.bin` `3a5e306623e8c80e13a4db0cce364ca24fa740338562852ff93d02e983a5ee16`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DD2	10252 bytes

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