PDF malware analysis — malicious · 6a8cf30f3529187f

MALICIOUS

PDF

41.9 KB Created: 2020-10-29 05:28:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: aad839be50952e058d4b9e9541e23579 SHA-1: 48a46cb2430993bf9c726a6a349b97f477d3a190 SHA-256: 6a8cf30f3529187fcbe92abc1c18aed49e767b7a9b59a07b658dcd191fd7677a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a malicious URL, identified as a redirector. The document body, though heavily obfuscated, contains the text 'Gmc repair manual' and the malicious URL, suggesting a lure to trick users into clicking the link. 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://ggtraff.ru/strik?keyword=gmc+repair+manual In PDF document text
- https://vadulovoke.weebly.com/uploads/1/3/4/3/134338980/aaf690.pdfIn PDF document text
- https://kamijiruwidezi.weebly.com/uploads/1/3/4/3/134387945/6528c6d45b0.pdfIn PDF document text
- https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/gexog_giluwifobobogom_sobalifew_folokotozawo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/2dfb6c63-1cca-49d6-8449-ccf5fbaa9105/bugefavu.pdfIn PDF document text
- https://s3.amazonaws.com/bojafazes/kusobesim.pdfIn PDF document text
- https://s3.amazonaws.com/tulosa/13145376905.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/efc8613c-e4f4-4502-88a9-97b3b2f8e166/42300179115.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/20792306883.pdfIn PDF document text
- https://s3.amazonaws.com/vutame/11108680581.pdfIn PDF document text
- https://s3.amazonaws.com/bevarolimesale/ruwizixijujuni.pdfIn PDF document text
- https://s3.amazonaws.com/tenunud/gedomosolimawofuri.pdfIn PDF document text
- https://s3.amazonaws.com/biwubeleba/adobe_premiere_pro_cc_2017_help.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/simultaneous_equations_substitution_method_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/nopomewegobij/lebovidajajetozejamotiz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0dfa7976-62e5-4a2d-8c97-687431176e6d/33790384591.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be40fe1f-a1a1-4db4-a7f3-a26359da008b/xezamifatofez.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/81299b16-32fe-4c94-968a-27d10f93b94d/84785915289.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/30613195180.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0810d89c-661c-4ef8-a859-274314e7bff5/farm_lessons_porn_comic.pdfIn PDF document text
- https://s3.amazonaws.com/zewimu/50417456484.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9c13c408-e326-4f52-98cc-bcffed1855d0/dudubekekenexigadu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e49f6d32-ba5e-40a2-8c71-011b99054b5d/pyomtre_chienne_prix.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ab85cb1c-6708-496a-843a-9dc4d4e042fa/topiwetumowuje.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_off0000657a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x657A	4932 bytes
SHA-256: `1ecb8084ef786d0d7faed36783985b5a1ebdf2e37665503beb355679faeab643`
`font_01_sfnt_off0000762f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x762F	10624 bytes
SHA-256: `04a37b7e718dead2ff2ef443a7e2a0d2edb3e6c6f945653aa4861c440a134439`

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