PDF malware analysis — malicious · cf65057f94449ec9

MALICIOUS

PDF

83.0 KB Created: 2021-03-17 05:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2a7c35abd09cfc888ef84e9c9e8e3e3b SHA-1: 53fd296d9d62b783bc00ee83954a0093e8927513 SHA-256: cf65057f94449ec93a73963785a8a4292afaffc1ea81853aefc6cb39e6a69a1e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to exploit users through deceptive content.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://mezovuduw.ru/123?utm_term=cars+movie++filmywap PDF link annotation
- http://winfreeiphone.xyz/650526682498biqx.pdfIn PDF document text
- http://shoop-fr.ru/one_block_skyblock_map_1._16._2qk513.pdfIn PDF document text
- http://biolinkus.me/michigan_foliage_report_2019uosjw.pdfIn PDF document text
- https://tupefumezamubew.weebly.com/uploads/1/3/0/8/130874634/421b50994f5aa5.pdfIn PDF document text
- http://look-hotel.com/minority_report_tv_wiki6upet.pdfIn PDF document text
- https://ganipomadajo.weebly.com/uploads/1/3/2/6/132695424/fd9bb62d766b6.pdfIn PDF document text
- http://graatorama.space/5038161504cra6b.pdfIn PDF document text
- https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/fewafurusesimiv.pdfIn PDF document text
- http://cabinetshub.xyz/the_history_of_love_free_downloadu6zj1.pdfIn PDF document text
- http://todayshop.website/765802482kfl0a.pdfIn PDF document text
- http://naturaitalia.space/najazumixuxitujjxral.pdfIn PDF document text
- https://vurebinavusim.weebly.com/uploads/1/3/4/7/134714178/1470055.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://41c240d9-b4af-4f88-8fa4-2a41cce3a287.filesusr.com/ugd/01bc73_87ea7a7529634c088cb5b20eaeb7658d.pdf?index=trueIn PDF document text
- https://ab60d57a-1f92-408f-9079-0b325776b613.filesusr.com/ugd/724fb5_6f822a6f2c594f169424c1808b84f1b6.pdf?index=trueIn PDF document text
- http://pumugotodag.epizy.com/how_to_program_remote_to_soundbar.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/719b0516-70cd-4f2e-820f-902036fd5a1b/gogasukasagirowofojarud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/607102b5-395a-456c-9d31-85bca1e9a43f/50936015495.pdfIn PDF document text
- https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_a8c8d7ac299d493caec7e804f4d75a93.pdf?index=trueIn PDF document text
- https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_f46427f8d8d04780b690b4c5a149ae0a.pdf?index=trueIn PDF document text
- http://rilinaga.epizy.com/lamumanu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d753a209-6df6-4db6-b629-1a02e4eb3aca/how_do_you_fix_no_dial_tone.pdfIn PDF document text
- https://ef5e9b3f-1a8e-4c79-9b60-34b8f8133c96.filesusr.com/ugd/18574e_ad4c9744b0064eaf95a1c607f07a26f7.pdf?index=trueIn 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_off0000f8da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8DA	4928 bytes
SHA-256: `f876b11e42e9cba2abfa8527293b0ea3d429788c9963f2bbfe6e0f8f91c13134`
`font_01_sfnt_off000109b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109B7	11412 bytes
SHA-256: `79065df400be4e2aba1d32f3d1c60807c679b118b5df0fcc374fa30a42ed7db8`
`font_02_sfnt_off0001309d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1309D	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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