Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb630f9903a469b7…

MALICIOUS

PDF

78.7 KB Created: 2021-09-19 11:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7c19f1ca8eface2a8cf47eecaf040bce SHA-1: f6b2918991a6221b1dd439e9dd016c742eebc185 SHA-256: eb630f9903a469b7e74cd40a2493d01477244843a5aa7877044fa6e86501e8c4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, directing users to multiple domains, some of which are hosted on compromised CMS upload storage. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

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://benardoutlite.com/admin/fckeditor/fckdata/file/moxefigefapuzuzusiw.pdf In PDF document text
    • http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/27113826673.pdfIn PDF document text
    • https://tarsiman.ee/files/file/24913218182.pdfIn PDF document text
    • http://emanuelarombiarchitetto.eu/userfiles/files/27565581308.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613019ad4f72d---68980008772.pdfIn PDF document text
    • http://tion.hu/upload/file/53234200447.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/gonojube.pdfIn PDF document text
    • http://vncdata.net/app/webroot/uploads/files/lemidipalejokilinotan.pdfIn PDF document text
    • https://tour-paris-guide.com/cite_imgs/file/79152132233.pdfIn PDF document text
    • http://varosom.hu/userfiles/files/5188139280.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/sarusizupegebebosozed.pdfIn PDF document text
    • http://karmakonnect.org/DrumiBhatt/karmakonnect.org/Final/ckeditorimage/files/sifetokafoxaxukewaforub.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/71685554959.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20210911080121_l4i6va.pdfIn PDF document text
    • http://maginsaatmetal.com/resimlerfiles/fativofupusotimoza.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146d49a58787---88375860992.pdfIn PDF document text
    • http://dietmoiquangle.com/webroot/img/files/94897674408.pdfIn PDF document text
    • https://bakotech.at/uploads/ckeditor/files/26638155545.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/ea3de45e90b244c1a1d3791fbc81951c/ditaxugeruwubuw.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20210914012905.pdfIn PDF document text
    • https://groupekheidri.com/ckfinder/userfiles/files/11938700181.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/66562561318.pdfIn PDF document text
    • http://bushurov.ru/images/files/79777343884.pdfIn PDF document text
    • http://parfumland.sk/upl/bawibanoxaxoluv.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/93091244870.pdfIn PDF document text
    • http://abw10thstreetne.com/uploads/files/gewopolubumijevolumuza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=spider+man+3+watch+free+onlinePDF 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_off0000cb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE366 11048 bytes
SHA-256: b67bcb6d2ddd8fc07beb1f9ae7da9045d658e65d5f1b06b56a81db8ea49f7617
font_02_sfnt_off0000fcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF1 18232 bytes
SHA-256: 1b94bde08c36d17a32ef600d400dc927243bce22704dfca280cd8623aa744334

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