Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba540345e311d5f…

MALICIOUS

PDF

80.4 KB Created: 2021-09-03 05:34:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: af264885f55fdde1516f5cd5ef1de317 SHA-1: a444d89daaae062ee5a69310259397b4d6d15497 SHA-256: eba540345e311d5fe3f3edbce07af6ab8437b89da94ade4bff85bbd46addb092
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8b3042b64---vugug.pdf In PDF document text
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/vafizufiviwizevemuwu.pdfIn PDF document text
    • https://best-label.com/upload/files/puwulurobedo.pdfIn PDF document text
    • http://haumeaonline.com/userfiles/file/rosewuboxebobutojuz.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/beradoxavox.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/2331054959.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/ee9ab46ee2173fb26e624a1ed56644ad/xelivileworili.pdfIn PDF document text
    • https://hefcom-hydraulics.com/ckfinder/userfiles/files/figawazi.pdfIn PDF document text
    • http://nfc.soo.jp/file/dadefuza.pdfIn PDF document text
    • http://www.globalnautique.nl/upload/files/25954116148.pdfIn PDF document text
    • http://bronnicy.inhome360.ru/admin/ckfinder/userfiles/files/pozawizurekojututaneg.pdfIn PDF document text
    • http://giasuthanhdat.vn/Images_upload/files/89348320411.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/rozibupudesa.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beb101c7ffc---651727529.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa266301f1---gajegurewubixer.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/092fb49a8c12eb59856a992bd1e016f1/91237054468.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095b1522adcd---60968665893.pdfIn PDF document text
    • http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vadusisukilunani.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/novk2ljrfsj78mpit97ni7hduc/80340286725.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608235a379333---kizolonawifojekis.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/68708827682.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210520234512.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5af266e651---xuruve.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/84428046649.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/38886751863.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073c431b0378---14819568294.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=solidworks+2007+tutorial+pdf+free+downloadPDF 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_off0000d571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 17148 bytes
SHA-256: c83ef42f90150e4add547eac0b3b5906b978ef9fc46f152dbae064c31fe29cb8
font_01_sfnt_off000101cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CD 11136 bytes
SHA-256: 526c5f99b66dfd79d659d5e75b36d17a7838c4f32c6c0713c7e168c55733a401
font_02_sfnt_off00011c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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