Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a0f2176139e9ea…

MALICIOUS

PDF

76.3 KB Created: 2021-02-18 00:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 058e0f9937f43a2aa4622e8ef8ea137b SHA-1: 31910824c0fb9e38d53d49d6eabd6ca979296c2c SHA-256: 65a0f2176139e9eab9ed69a303d5a79fa1c791f8b3705707996bf5dc3c8a37fe
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are hosted on disposable domains and point to other PDF files, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, potentially leveraging embedded JavaScript for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=music+listening+today+4th+edition+pdf PDF link annotation
    • https://vezefujofebiv.weebly.com/uploads/1/3/5/3/135304234/woxutupo.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/free_live_channels_app_for_firestickv4omn.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/sadudapifivo.pdfIn PDF document text
    • http://mif-smeh.space/gedusitedisinalscjt.pdfIn PDF document text
    • https://vulazijol.weebly.com/uploads/1/3/4/6/134648863/xekad-fogokov-maferaxota-moxulevoruzulo.pdfIn PDF document text
    • https://tisawisapapaw.weebly.com/uploads/1/3/5/3/135326074/jevajewu.pdfIn PDF document text
    • http://sodalabs.pro/michelin_route_guide_spainebiz1.pdfIn PDF document text
    • http://helpcopyright-service.com/zukajuzaruwuvekevt7qyo.pdfIn PDF document text
    • http://studytogether.fun/the_activity_series_pogil_answer_keyezz72.pdfIn PDF document text
    • http://vittorguxx.site/why_is_my_anker_not_chargingfrqke.pdfIn PDF document text
    • http://fabermanufacture.ru/you_can_draw_transformers_download6ehn1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vebavibokifoko.epizy.com/69440651123.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/fowoguzunatuzejuwogevimes.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/limela.pdfIn PDF document text
    • http://sonedef.epizy.com/easy_hidden_pictures_printables.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/woroverejopipov.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/dangerous_fellows_ethan_answers.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_off0000ed1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1F 5516 bytes
SHA-256: 67ac9acece698122118df85db67063194b95c7228ea2854ac134bf2a255343e7
font_01_sfnt_off0000ffff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFF 10476 bytes
SHA-256: 349376af7c99e5238be53877646b818fdbd05bc94c6354d961bff90abfcd0229

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