Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ca578ceec03edd…

MALICIOUS

PDF

70.5 KB Created: 2021-09-27 20:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 5c7230c4f153f1c6c52ed2a420007be5 SHA-1: 478af95f85d99c8b7f92620931cbab5b8440e270 SHA-256: 48ca578ceec03edddf273f853d9a19a152173af1b7c1da1ad05a03e22a6037c6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malware or phish users. The presence of embedded URLs and the nature of the links indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a17951f634944951ec1e658c23f618aa/sotafa.pdf In PDF document text
    • https://ddc-touggourt.dz/ar/files/rojowivuw.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/7a5518d3a84f213faad8ad5c678d37f9/57209588404.pdfIn PDF document text
    • http://sake2metustin.com/uploads/files/92604130215.pdfIn PDF document text
    • http://irollee.com/userfiles/file/makewuzafixanutazomulal.pdfIn PDF document text
    • https://thic.net/plugin/ce1/ckfinder/userfiles/files/zanovonokujejunopojolaziw.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/fa50880537558c4e442c521ae46f3df8/zekinotejewuvokebetezixi.pdfIn PDF document text
    • https://posaonakosovu.com/ckfinder/userfiles/files/94642877076.pdfIn PDF document text
    • http://thietbiantoanttk.com/uploads/files/48441171342.pdfIn PDF document text
    • http://ke-sen.com/userfiles/file/1631877766.pdfIn PDF document text
    • http://baove24h.info/upload/files/14080998676.pdfIn PDF document text
    • https://pecintajp.com/contents/files/lusuz.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/2021921518351164.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/80337314716.pdfIn PDF document text
    • https://paramourpourbebe.bettygagne.ca/userfiles/file/patutanojekazupole.pdfIn PDF document text
    • https://31app.com/userfiles/file/tonorexofidad.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133711bca2f0---7308466788.pdfIn PDF document text
    • http://canadianrockies.ca/files/file/visewifumorofuxer.pdfIn PDF document text
    • https://ascend.sut.ac.th/ce/2017/src/plugins/ckfinder/userfiles/files/50634140328.pdfIn PDF document text
    • http://archbot.pl/files/file/56122563809.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/54864308309.pdfIn PDF document text
    • http://twsl.mingann.info/upload/ckfinder_temp/files/20210904090544.pdfIn PDF document text
    • https://amatnieks.lv/pictures/image/89396054160.pdfIn PDF document text
    • https://blagoustroystvo24.ru/ckfinder/userfiles/files/32125954184.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=play+store+free+slot+gamesPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E2 16860 bytes
SHA-256: 4c8290b4f422175764b0aa954bec62945ec84614a894843c2f42f78215897682
font_01_sfnt_off0000dc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B1 10476 bytes
SHA-256: 8472cb02c681927e48d088ed838d6c695bcf31aa4dc8cf5c8e59cc33d802cf08

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