Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad4eeb3993b9b49…

MALICIOUS

PDF

86.7 KB Created: 2021-09-17 10:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: e5345c14e8d8ac8e60be30b69e8f8a0f SHA-1: 020250814e1389ba3793b1ac5993eec4c99d8763 SHA-256: 5ad4eeb3993b9b49d42a498abf1fb6bf2a91c37406bb14b7be1549e4ee68299b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress uploads and disposable domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://batistar.fr/userfiles/file/27214836855.pdf In PDF document text
    • http://naturpix.ch/cmsimages/file/82538504244.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/tuwavumulilijom.pdfIn PDF document text
    • http://riverside-plaza.com/upload/userfile/files/nofida.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/bunezaxenegavimegipi.pdfIn PDF document text
    • https://brakos.it/file/72570867835.pdfIn PDF document text
    • https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/67574681827.pdfIn PDF document text
    • https://cylinder96.ru/admin/ckfinder/userfiles/files/97169867546.pdfIn PDF document text
    • https://nazrabilisim.com/calisma2/files/uploads/96989489591.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613e949ec78b2---pezetagokosomaz.pdfIn PDF document text
    • http://aerotherminsulation.com/userfiles/file/liluw.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/redajakefoloxibuzelarejuz.pdfIn PDF document text
    • http://waycreon.net/bhaskar/yii/upload/files/vofavuvowurotadita.pdfIn PDF document text
    • https://automatisme-portail-bordazzi.fr/userfiles/fichiers/24217054612.pdfIn PDF document text
    • http://pantipplaza.com/userfiles/file/dakarupavemupuronavewav.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/1c523b722f2add9ef1ba78ad4218488e/zejonu.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021090304063573499.pdfIn PDF document text
    • https://thehouseconcert.com/ckfinder/userfiles/files/87298835543.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/7765025123.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/rekigogazenetunexabixime.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e32338750---60845355289.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/taxujufufenow.pdfIn PDF document text
    • http://ranjitabiswas.com/userfiles/files/15615501952.pdfIn PDF document text
    • http://woodbridgeabw.com/uploads/files/danijeja.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381591cf2f5---82923111985.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=nulls+brawl+alpha+oyunindir+clubPDF 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_off0000e3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0F 10800 bytes
SHA-256: 5356c56cdacb76c8b677b9d5456130701eefe9958fd6497962c90de921687742
font_02_sfnt_off000114ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AE 21600 bytes
SHA-256: a42a0ce9c178639c9e9057bbcbe57b66ecec67cec1096a36174fdac901077f9e

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