Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacb9ca25df7cddb…

MALICIOUS

PDF

68.2 KB Created: 2021-06-12 04:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 568ad9ef17db012bb3f013819b53375d SHA-1: e1208ac210ebd3269be669d398ae3ce608dfff5c SHA-256: eacb9ca25df7cddb21c760717950ab3e524ac9fd96181e00b52fc871785c38b1
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 6

  • 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 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.
  • 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://huntic.ru/pbw?utm_term=frostborn+hack+ios PDF link annotation
    • https://lesilejot.weebly.com/uploads/1/3/5/3/135314863/povibu.pdfIn PDF document text
    • https://mabamakozipapap.weebly.com/uploads/1/3/4/3/134315796/7642173.pdfIn PDF document text
    • https://puzesijokivokef.weebly.com/uploads/1/3/4/3/134312217/vatetu.pdfIn PDF document text
    • https://ratexema.weebly.com/uploads/1/3/4/7/134720574/vuses.pdfIn PDF document text
    • https://biditojutorosas.weebly.com/uploads/1/3/4/6/134657596/b368570c3.pdfIn PDF document text
    • https://fidejilajusaxe.weebly.com/uploads/1/3/4/3/134363993/975e14.pdfIn PDF document text
    • https://tuvajidemagik.weebly.com/uploads/1/3/2/6/132681445/ruvijezid.pdfIn PDF document text
    • https://lokevevivepino.weebly.com/uploads/1/3/4/1/134131736/jasolit_mumepiwafesene.pdfIn PDF document text
    • https://wibafodutaselo.weebly.com/uploads/1/3/1/3/131380847/3785062.pdfIn PDF document text
    • https://malozesa.weebly.com/uploads/1/3/4/5/134505473/puzisavu.pdfIn PDF document text
    • https://fibepuranes.weebly.com/uploads/1/3/4/0/134041348/worot_netemok.pdfIn PDF document text
    • https://pokenavij.weebly.com/uploads/1/3/4/8/134892290/fatodufovig.pdfIn PDF document text
    • https://tevufipe.weebly.com/uploads/1/3/1/6/131606546/jotowi-marisep-tijezoxedezeb-mazosuxunav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poxanoralanu.pbworks.com/f/nss_para_hilesi_indir.pdfIn PDF document text
    • http://sapagujedok.pbworks.com/f/jedoriwerupofivonud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eceed1c-425d-435b-b848-56aad684cea3/laxufasivexo.pdfIn PDF document text
    • http://zixememot.pbworks.com/f/6172807013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8405b5a-4670-4bd8-a176-423558af069b/dirt_devil_endura_max_xl_pet_manual.pdfIn PDF document text
    • http://gipomebepate.pbworks.com/w/file/fetch/145064187/sample_cv_for_job_application_download.pdfIn PDF document text
    • http://zovafidat.pbworks.com/w/file/fetch/145169208/sadlier_vocabulary_workshop_level_e_unit_7_answers.pdfIn PDF document text
    • http://zizalojuwe.pbworks.com/f/superman_workout_plan.pdfIn PDF document text
    • http://labidan.pbworks.com/w/file/fetch/144711630/36729591990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16062d95-8c27-4963-a847-3146b95102e9/44661518179.pdfIn PDF document text
    • http://xibosini.pbworks.com/f/kagizakokuzovaxoworawut.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/w/file/fetch/144423066/wugisixezenikowuvepevil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbfaf408-9087-4b89-8413-c164a5d94669/bhakti_ringtone_krishna_bansuri.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.

FilenameKindSourceSize
font_00_sfnt_off0000ccd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD6 5012 bytes
SHA-256: 12a6a7a43d614376a592120a40243742a66e61377aa09351489a21902d35cb86
font_01_sfnt_off0000ddde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDE 10448 bytes
SHA-256: 7217e2773cae2eafca2911d080f0ecddd85c7bce766c5338ca5e4794eb721a5c