Malicious PDF — malware analysis report

Static analysis result for SHA-256 00187b82d47d54fa…

MALICIOUS

PDF

78.2 KB Created: 2021-09-01 18:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ca351f90b6472b67fd030fe24129cb12 SHA-1: 2d8366c14f0bc91da5a87e493853e213b5a1025b SHA-256: 00187b82d47d54fa6cce68b984e0db1b060ec26457d73cc3e7fed0932eb9e355
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple domains, some of which are hosted on compromised CMS uploads. The presence of multiple external URIs and a link farm suggests an attempt to redirect the user to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ludifrance.fr/userfiles/file/pezuxuviv.pdf In PDF document text
    • http://xn--o79av69abka850ab6c.com/upload/file/202108302153154961.pdfIn PDF document text
    • http://vitalenzyme.com/uploads/fckupload/file/tejudugoli.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/84432531663.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/pasivepi.pdfIn PDF document text
    • https://reparation-mobile.net/userfiles/file/guduxofuloso.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160885c09aa6ed---65960042157.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/sasogorenipojumazunuvo.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/retegigirabarejasiba.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/34287126871.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/fakomukugirepa.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/8cc845f4c728b1fbbd74b4682b1d7364/1624424299.pdfIn PDF document text
    • http://mjsolankifoundation.com/fck/imagesfile/12113553506.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/3164gtrit63pkm96kuv0l82ia0/27941394962.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/kitemevudu.pdfIn PDF document text
    • http://top1np.com/ckfinder/userfiles/files/turodotokipoxug.pdfIn PDF document text
    • https://hanahana.vn/media/ftp/file/rozijewoni.pdfIn PDF document text
    • http://www.anapharmata.hu/ckfinder/core/connector/php/files/11748938810.pdfIn PDF document text
    • http://boilerservis.ru/uploads/files/timunilixive.pdfIn PDF document text
    • https://jancsoalapitvany.hu/ckfinder/userfiles/files/zefuwazugimer.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/dc2377f7685c7c61d3245f3d9b2964dc/fisopedizupu.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/4fbd310f974fdb0388522a020c1c4e4b/17582607479.pdfIn PDF document text
    • http://tutek.eu/userfiles/file/12725419781.pdfIn PDF document text
    • https://mszukam.pl/dat//file/gozigarulawukided.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/161114e1e0af22---27028440245.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=luffy+strong+world+outfitPDF 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_off0000cc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5A 10492 bytes
SHA-256: 0784d1526bd988d475e31a21288172520b70a54b2639a5f0e32e3fb4acd555dc
font_01_sfnt_off0000e42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 17460 bytes
SHA-256: 797cecafb6158ca765a04417df4415d1799bd2b9eabfce74d01d08ee5b96fa0a