Malicious PDF — malware analysis report

Static analysis result for SHA-256 217ce00c2c3fa17f…

MALICIOUS

PDF

133.2 KB Created: 2021-09-06 13:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fb022d7ecc5138dc5f30d3c8943cfd80 SHA-1: fe5ea3d1aa06a7c96bb98db8d73f1e25683ffbcd SHA-256: 217ce00c2c3fa17f4ba8485c9146ce692bee483d34315f2f12307891dd6a37b0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The primary purpose appears to be directing users to external malicious sites, likely for phishing or malware delivery, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://garglob.ru/uplcv?utm_term=d%C3%A2ng+ch%C3%A9n+ch%C3%BAc+t%E1%BB%A5ng+pdf PDF link annotation
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5129e9999---gemuxijutibokixovaxejoto.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/17322412920.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160844bc4b3edc---75008380643.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/r2p0pqnlpglgqkuovpvu0g6o22/74168024226.pdfIn PDF document text
    • https://ceccargiurgiu.ro/userfiles/file/wotogitorimitomarax.pdfIn PDF document text
    • http://carrozzeriabosini.net/userfiles/files/35361994081.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608871d4ae8da---bufomowujolufabuwez.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/defisisedizozufotexosa.pdfIn PDF document text
    • http://guides2alpes.org/uploads/file/jesisi.pdfIn PDF document text
    • https://xaydungdonggia.com/app/webroot/files/images/pages/files/82548943236.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/kepojakatamebirinokixopoz.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b54e13ce4dc---tuvenekidoxezeguzofazes.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/molalupexisizati.pdfIn PDF document text
    • http://www.kotolantopeni.cz/files/32425153907.pdfIn PDF document text
    • http://stepasidemedical.ie/images/uploads/file/59962017334.pdfIn PDF document text
    • http://infinivideo.hu/sites/infinivideo/files/fewoxuwigekawujaj.pdfIn PDF document text
    • https://parfumzone.ro/files/file/zolenugoxapemiropofa.pdfIn PDF document text
    • http://aygroupmuh.com/image/files/80316087897.pdfIn PDF document text
    • http://straub-online.ch/userfiles/files/79487682296.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-7/file/rubidaluzejakitemaza.pdfIn PDF document text
    • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/81752545616.pdfIn PDF document text
    • http://easyhypermarket.com/userfiles/file/vexamure.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/2831917996.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://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_off0001969f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1969F 10684 bytes
SHA-256: ce333fd36f8911499dc2c06dfcaa5b2aa5cee4c0b1045a487512670004ac22fd
font_01_sfnt_off0001aeac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AEAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001c6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6BE 33712 bytes
SHA-256: 33f1bc9ebd7dd587607d66ce9d705450783df7b7727e73cf483474a410b01257

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