Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b1742fc495f12d…

MALICIOUS

PDF

76.1 KB Created: 2021-09-12 21:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: aa35c90e3d7263ff2350279b54c427f3 SHA-1: f8903ab89f34f95949e471d7221cf19c2e2f3e80 SHA-256: 95b1742fc495f12d14f6b445244c84f8dbe2de9b15f5ae4ce8ffd026dbe633a0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV and an ML classifier as malicious. It contains numerous links, many pointing to potentially compromised WordPress upload directories or disposable hosting, suggesting a link farm or redirection tactic. The presence of external URIs and the overall structure indicate an attempt to direct users to malicious or compromised sites, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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 http://saraiaser.nl/userfiles/file/jexovap.pdf In PDF document text
    • https://villatoscana-pi.it/userfiles/file/77364008807.pdfIn PDF document text
    • http://mimarathi.live/assets/ckfinder/core/connector/php/uploads/files/43843468236.pdfIn PDF document text
    • http://lesmashclub.com/imgUpload/files/67799319107.pdfIn PDF document text
    • http://xaydunghoangthanh.com/img_duhoc/files/87891683792.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/fetemozus.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340a84748c5---kopotu.pdfIn PDF document text
    • http://architettotoma.it/userfiles/files/simavigofixibodud.pdfIn PDF document text
    • http://clubesquilacoma.com/uploads/files/39407043177.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/g68g7fo2er3qiu1mff73bioaoj/xovepetomoxusuzixodalo.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/gimegijawemafilaponod.pdfIn PDF document text
    • http://gazetavk.ru/img/file/16679212413.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/428b42ddfc27fb216f310c8c1a4613a8/mowevimagazupinipaxowom.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/xegapujovupomixi.pdfIn PDF document text
    • https://ausztriasi.spawellness.hu/upload/hirlevel/files/lelakavivopafivimumugerik.pdfIn PDF document text
    • http://xn--e42bt3l.net/upfile/files/venaparitagilogukisag.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/varibefixezoxoxetuwe.pdfIn PDF document text
    • http://dkmmotor.com/files/userfiles/file/78660693689.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/vaxexoporuguz.pdfIn PDF document text
    • http://xn--12cbg9dihj7egda2g6a7dceb1d2cp4nvgf4f.com/datas/files/zekiguvok.pdfIn PDF document text
    • http://floral-design-lindgens.de/userfiles/file/lukununupejiwigosipo.pdfIn PDF document text
    • http://studiocalderini.it/userfiles/files/96919266612.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///22262565019.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/27972921189.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=prayers+of+faithful+for+funeralPDF 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_off0000c3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 18056 bytes
SHA-256: 866393c339e6b073f0473b0de4cf3caf07396e74f692502bd83a2b65a69d4598
font_02_sfnt_off00010990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10990 10528 bytes
SHA-256: 147a026bee50f94aa07fb6e82818490a533ee35091a294aeb9a0983f3970fffa

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