Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5365cbeb7b33a5…

MALICIOUS

PDF

110.5 KB Created: 2021-08-11 16:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b101ac3d72ff18f385bce6199898bff9 SHA-1: cf5e600503a4be43215ba89bd45ec739c8364103 SHA-256: ee5365cbeb7b33a56ff24f4060202d782a67ffe34626b17b23f109fd3eef162c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, serving as a distribution mechanism for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://binarbaidequipment.com/public_html/userfiles/file/36878694107.pdf In PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105e081d7aa1---xamojeribomo.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/gawipaxenowetevo.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/241223a4a17e2d318f8446bde0bf8042/54648599536.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd3ffb1866---37795418246.pdfIn PDF document text
    • https://travelone.ae/userfiles/files/luxukitiwokupuketaje.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093045f0f522---farixifakokenikafo.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16273038682536.pdfIn PDF document text
    • https://www.hkha.org/ckfinder/userfiles/files/6172016184.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/jiwadudominot.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/fsnc9nvc9iqkvvptu8m9bkdfei/62097951654.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16081f7dda3bbd---somidaxu.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/seic7kc7se2c7pk26c0qvgscfc/teviririsoxulokabuduvi.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffa3fe86b5---solanijumuzikutuk.pdfIn PDF document text
    • http://plncse.hu/php_data/file/nolarisupapelugom.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/ratiximunijisomik.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922f28a097d---25682704199.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161086bc690996---zurobixumetesaxe.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/241319353810.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/26159830467.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/demitefulav.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/1enopo5hmhu6e6qk1rjs018foa/ditisuwikesanunog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=2000+sea+ray+sundancer+270+owner%27s+manualPDF 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_off00014b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B10 17264 bytes
SHA-256: 5db739cd9734210f5eceb0af4e79ae4fe935d3b8f8bea34b1ffba9eb16d1a70e
font_01_sfnt_off00017872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17872 10868 bytes
SHA-256: bd28fc58fbc42e5cc78313773fe5307bb198d057598c4f0e94bef3e733532fc9
font_02_sfnt_off000191cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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