PDF malware analysis — malicious · 08d431648686fbe0

MALICIOUS

PDF

33.3 KB Created: 2020-08-15 06:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f502ebd6d55ea8de5c0e4ca145118ea2 SHA-1: 4e5345863d7e4c58b4a9ea5cb1ebc2cd3b390a8d SHA-256: 08d431648686fbe068d2b9c94fb67a9dce15666561460d42317f41d7976c3a24

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link that leads to a link farm of other PDFs, indicating a phishing or scam attempt. The embedded URL is presented as "Disability inclusion action plan guidelines" to deceive the user. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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=disability+inclusion+action+plan+guidelines
- http://koxalu.margoazzarelli.com/uploads/1/3/0/9/130968917/606775f.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0435/9569/4239/files/20_laboratory_apparatus_and_their_uses_with_pictures.pdf
- https://cdn.shopify.com/s/files/1/0433/9027/1651/files/vesatur.pdf
- https://cdn.shopify.com/s/files/1/0428/8118/8003/files/jetagubawiwisivojuxesi.pdf
- https://cdn.shopify.com/s/files/1/0429/8909/3018/files/53671400048.pdf
- https://cdn.shopify.com/s/files/1/0431/9186/1412/files/povivadarekeputavojufetum.pdf
- https://cdn.shopify.com/s/files/1/0433/4721/4486/files/61479344345.pdf
- https://cdn.shopify.com/s/files/1/0431/4228/3432/files/75337953624.pdf
- https://cdn.shopify.com/s/files/1/0437/9577/5650/files/xurivagel.pdf
- https://cdn.shopify.com/s/files/1/0432/2911/8627/files/nujivev.pdf
- https://cdn.shopify.com/s/files/1/0431/2757/0596/files/75818139240.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_off000045b7.bin` `816401a687a7ed09c80e6a1912ad149e69f557f3539250df70f71e7b3d9631ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x45B7	5384 bytes
`font_01_sfnt_off0000580e.bin` `432abd623c40f18c0859006d6827b0b542bb45b45b68e6f6e225e9253130ddfc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x580E	9564 bytes

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