Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0030a33b4f00d9…

MALICIOUS

PDF

79.1 KB Created: 2021-09-17 16:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ecfdf6425af185f7a9b2f834080dd33a SHA-1: 20687600f3efa8d9e8b55d2316050ce56d1c55b9 SHA-256: 7c0030a33b4f00d9d8b35ba659b1d536eafcc7e0a8f79b345227cf0301fe8b0a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs pointing to various domains, many of which are identified as link farms on disposable hosting or compromised CMS uploads. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, preventing a clear understanding of its direct lure, but the overall structure and URL findings suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://arbormaster.net/uploads/files/fixegefalimodozugajixin.pdf In PDF document text
    • http://popnmusic.fr/userfiles/file/78892431266.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/dowerudela.pdfIn PDF document text
    • https://interior-mark.com/ckfinder/userfiles/files/fagediwevedodor.pdfIn PDF document text
    • http://muacuoi.vn/Pictures/files/terap.pdfIn PDF document text
    • http://ros-audit.com/i/up/file/vodiruzigibigakutasusi.pdfIn PDF document text
    • http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/61328235847.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-13/20210913225609936386.pdfIn PDF document text
    • http://seattlebestteriyaki.com/uploads/files/dituso.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/21733036862.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613bdbf394e17---56736037301.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/56342491518.pdfIn PDF document text
    • http://cgemfoco.com.br/ckfinder/userfiles/files/21664813938.pdfIn PDF document text
    • https://www.restaurant-latableedevercel.com/ckfinder/userfiles/files/gojifilozamekuwanorazepa.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f03fd34434---voxifuzonabatonaleruwetof.pdfIn PDF document text
    • http://sunnysolutions.it/uploads/assets/file/63630505914.pdfIn PDF document text
    • http://ieeepes-thailand.org/app/webroot/files/files/solefegez.pdfIn PDF document text
    • http://cpils.com/userfiles/file/jojirafuto.pdfIn PDF document text
    • http://www.sudeshnamaulik.com/fckimages/file/76975645000.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/rulopevukazikuwuri.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/80063806555.pdfIn PDF document text
    • https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/23747081703.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/82241632576.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/6f37ee4c56c5f0237880e5341c8a707a/repinogimig.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/kewoxebuz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=pixel+qr+scannerPDF 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_off0000d103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD103 18232 bytes
SHA-256: d450a10107a09bbd823fe29ecac23b8789a5946cca98aaeef702778ea5c3fed9
font_01_sfnt_off0000ffd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E8 10252 bytes
SHA-256: 7305b292d853bb1bb041bcf2f3b5c6e908fd9af29911e0d31e3a053b39eb2158

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