PDF malware analysis — malicious · 63f7ebd8663d53c6

MALICIOUS

PDF

67.3 KB Created: 2020-10-29 01:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 44521486fcc571c05748fc7b456c6370 SHA-1: ea4154c3751e002de3bfe45a3e92245d8586208e SHA-256: 63f7ebd8663d53c67ee21763f0a385e0ed8ae6beb3d08963e6baa535be0807d7

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 ML classifier strongly indicated maliciousness, and the heuristic firings point to the document being used as part of a link farm or SEO spam operation. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to drive traffic to malicious or deceptive 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://gettraff.ru/123?keyword=naruto+season+5+episode+35 In PDF document text
- https://cdn-cms.f-static.net/uploads/4369189/normal_5f8a2f9b3d49f.pdfIn PDF document text
- https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/6fdf5fb01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409250/normal_5f97e80018115.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366337/normal_5f8714b7e29b2.pdfIn PDF document text
- https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/d506d45.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tadovu/99552639791.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/5332/1887/files/35192701086.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/6978687977.pdfIn PDF document text
- https://s3.amazonaws.com/jiguwuzobozobaz/kuvevazugobukibobopogonow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/1979/6119/files/zixijedudurasuvuwa.pdfIn PDF document text
- https://s3.amazonaws.com/vuzufexarevima/gezutelo.pdfIn PDF document text
- https://s3.amazonaws.com/jamokaroxoj/nosanafigogi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8394/8740/files/fagakuv.pdfIn PDF document text
- https://s3.amazonaws.com/sukedil/little_bird_tales.pdfIn PDF document text
- https://s3.amazonaws.com/gitipelut/46409842380.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0488/3264/3237/files/21395046347.pdfIn PDF document text
- https://s3.amazonaws.com/mejigavukolu/lelefazilopavusuguxane.pdfIn PDF document text
- https://s3.amazonaws.com/tifuwuw/fonarebeniwulupilaza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5977/1557/files/remipamonaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6006/7481/files/gilamumowizawirojubuletu.pdfIn PDF document text
- https://s3.amazonaws.com/jepavilutabilel/the_cube_streaming_movie.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000a9c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA9C2	8896 bytes
SHA-256: `368b0ed4bd26b2c553ad8629e11a05bcf485ecf684127644eb916efe9b49c7fa`
`font_01_sfnt_off0000c749.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC749	5176 bytes
SHA-256: `7915c286752404f2675e77f2b222346f9e8e63f803760b775c2966b1e11d61d0`
`font_02_sfnt_off0000d8ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8FF	11656 bytes
SHA-256: `bb688ac6beeeea3e0d50bc08ffcc1144e8a13f7908aae57a373c85921096eba8`

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