Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7eed1de8de7b0b5…

MALICIOUS

PDF

80.7 KB Created: 2021-09-02 01:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d916316e43ac35e4944a0e51e7241007 SHA-1: 0dd11521a71b0788456f3463ca8e74eeab47b399 SHA-256: c7eed1de8de7b0b518c7c24b4be6973a0fc924c92bf99a5576da24e138a00e89
164 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The heuristic 'SE_URGENCY_LURE' indicates the document likely uses deceptive language to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • 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://garglob.ru/uplcv?utm_term=constitutionfacts+com+answers PDF link annotation
    • http://rajeshjshahani.com/clients/d/de/defaee86e9f1fedea086b53a5072ac2c/File/wumiwulodamuxiraxamuti.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df1f06bd54---kozudexavaja.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/f01cc0fa9f7a8153c02625c586970c49/jozox.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/ccde45d6a1243238c1f78d59265aa4a7/36042177167.pdfIn PDF document text
    • http://matras-devison.ru/upload/file/13028689445.pdfIn PDF document text
    • https://hometutorsdelhi.com/userfiles/files/44836106211.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/caec0c54b68a66e8a1e9b8a3e58c1e74/gedepugamoxozogib.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/podujefonare.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210728025118.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/94823524031.pdfIn PDF document text
    • http://edwindijk.nl/home/edijk/domains/edwindijk.nl/public_html/uploads/file/lusemixofebimoxodezebor.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/2446303346.pdfIn PDF document text
    • http://thibangoto.com/app/webroot/uploads/files/mopuzagij.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/9361616055.pdfIn PDF document text
    • http://predit.ru/admin/ckfinder/userfiles/files/nujovexalep.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4d8ea8539---61365625778.pdfIn PDF document text
    • https://twfern.org/upload/ckfinder_temp/files/20210619040200.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16127b56521611---98510976390.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae628479cc7---xifijuku.pdfIn PDF document text
    • https://podgoricki-klub.me/userfiles/file/33061098866.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/cb402063jrc9tfbbu0h41f7k03/56862748622.pdfIn PDF document text
    • 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_off0000d7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE9 17172 bytes
SHA-256: b4a7e6c4a5d1c7e92e9615cca59b29de2262754c99cf87560477171ac4893cc1
font_02_sfnt_off00011c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C95 10668 bytes
SHA-256: 091351cf6a4bb8b23fb24ed0a50ea82d32e83be66ad7661bff801823179d4137

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