PDF malware analysis — malicious · c966b9c69a8c3c95

MALICIOUS

PDF

89.7 KB Created: 2021-04-11 13:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 2dfafdc7ed5b85a516eaab7839f6b8a5 SHA-1: 289576779e9b6bc5a048a6a1e6e4ef5c256cd3ca SHA-256: c966b9c69a8c3c95dabdceb1102bb01014fe219c568e8ca8bde50084596c7fcc

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were extracted, the PDF structure and URL analysis suggest an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=is+ifit+worth+it PDF link annotation
- https://static.s123-cdn-static.com/uploads/4486197/normal_5fcab91de1984.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410004/normal_6001df4201b85.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454545/normal_6024358cc8a61.pdfIn PDF document text
- http://golixudib.mypressonline.com/unknown_market_wizards_book_review.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403676/normal_6009ae3d7a834.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406482/normal_605ff42b85777.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480581/normal_603d00e8b94ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419644/normal_605d1154581b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376371/normal_606c217c444b7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422136/normal_60603197dd9a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4492892/normal_603879990004e.pdfIn PDF document text
- http://xulubapatoso.scienceontheweb.net/codigo_de_error_netflix_m7353.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410447/normal_5ff7d2476c72e.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/sazixipame/matlab_for_chemical_engineers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/13254265-67dc-4f30-8659-1456db05c03e/79709246328.pdfIn PDF document text
- http://dufobirufo.atwebpages.com/catholic_answer_bible.pdfIn PDF document text
- https://s3.amazonaws.com/xidulumexi/80778398415.pdfIn PDF document text
- http://nevafofuvabovid.atwebpages.com/48681381086.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/991fb665-8f33-4c65-b08e-012c069966d4/espiritu_de_dios_acordes_athenas.pdfIn PDF document text
- https://s3.amazonaws.com/murudute/tamojufamujuvese.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bee26c1b-3c7a-4126-b3d7-0f90ffd9807b/51549123245.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_off000116cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116CC	4640 bytes
SHA-256: `8e3191253903b4ea7f3da48c6279c0bc059f4557567c937f896d7fb7a8e5aa1a`
`font_01_sfnt_off0001269c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1269C	1800 bytes
SHA-256: `e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d`
`font_02_sfnt_off00012f2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F2A	12308 bytes
SHA-256: `e65df4e36d29390ae26e8c231bd6ce28ae3b9308d75d7904af711b5e45cd674e`

Open this report in the interactive analyzer, or submit your own file for analysis.