PDF malware analysis — malicious · f9211f86bd69f490

MALICIOUS

PDF

35.2 KB Created: 2020-11-02 17:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: c35fb747dc305eb60c8bf00205c643e8 SHA-1: 779092802a5be9f06c085a872ab1591365333f3d SHA-256: f9211f86bd69f490b418f6b3388b9d862fe45411b80553ec0f88ae44b171968c

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a repair manual resource, which redirects to known malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URLs suggest a phishing or redirection attempt to deliver a malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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.cc/123?keyword=briggs+and+stratton+repair+manuals+online In PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
- https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/457213.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365613/normal_5f91ef43c25d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368488/normal_5f9295b289193.pdfIn PDF document text
- https://romovemesokawaj.weebly.com/uploads/1/3/4/4/134479736/31dc0eb016b2e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379961/normal_5f97801c510b6.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/dedinavesute/best_dancers_in_the_world_of_all_time.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0f603db-a02f-467b-8ef0-e397856cc31c/jabagugimoxezegizimale.pdfIn PDF document text
- https://s3.amazonaws.com/tuxenipup/nakebipulal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0509/2533/8784/files/wosujitanoditurixurabina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/2554/5416/files/diagrama_de_flujo_en_excel.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004b6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B6F	5328 bytes
SHA-256: `458ba82a75c60d18a67d734f46d1cadcc41314ec4b0eb4079a4b32eb8739bab5`
`font_01_sfnt_off00005d75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D75	10032 bytes
SHA-256: `f23105b90ab9eaf7cce567f8180aab78e50440180bb27826a6b6ba02b69afb60`

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