PDF malware analysis — malicious · 3ddd14f512f44e41

MALICIOUS

PDF

53.7 KB Created: 2020-11-04 02:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f3331cbcff0ac419c3a3f9687bc88db1 SHA-1: 2ff994e951f6970d7812b21b01ef9e2569063b47 SHA-256: 3ddd14f512f44e41242434f77473db19d770968636e78341b7fd1bf3c5aba6f2

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/aws?keyword=jay+z+the+blueprint+rar', suggesting a lure to download potentially malicious content. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/aws?keyword=jay+z+the+blueprint+rar
- https://cdn-cms.f-static.net/uploads/4421781/normal_5f9bed3d7d921.pdf
- https://gabamavipe.weebly.com/uploads/1/3/3/9/133999819/3070629.pdf
- https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/xofasaladuf.pdf
- https://cdn-cms.f-static.net/uploads/4374848/normal_5f8bebea650d9.pdf
- https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/derobotezup.pdf
- https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/bb751ac73e5e51f.pdf
- https://cdn-cms.f-static.net/uploads/4367617/normal_5f88300f6e3de.pdf
- https://cdn-cms.f-static.net/uploads/4407084/normal_5f9a5301f097c.pdf
- https://cdn-cms.f-static.net/uploads/4367912/normal_5f9236dfda401.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/2a143d9b-5f17-4e35-b6e4-82666c20bea2/dipivojuwixev.pdf
- https://s3.amazonaws.com/mupukesunobaga/11726399471.pdf
- https://s3.amazonaws.com/gebaxovudofe/the_expander_ride.pdf
- https://s3.amazonaws.com/henghuili-files/kifiwaxizolisud.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_off00008ae6.bin` `519bb994ec119c67dc644e409575777c022d515681daa20e7febd2ac743c295a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AE6	5012 bytes
`font_01_sfnt_off00009bf8.bin` `d7dbd9937ccc41b9e822d51e68972b2d450f796a42eff15a3cc4fa8fc93f04ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BF8	17808 bytes

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