Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e0e1d6db6113fb…

MALICIOUS

PDF

74.3 KB Created: 2021-06-10 12:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: be6b723ebc5d870837af333c888b308c SHA-1: 029864d651ee02409577b252b968bb8320efb280 SHA-256: e8e0e1d6db6113fbd1a7846dd665f85b2ff4b2fcc3e015a8d0960fc23644f150
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://philabc.ru/uplcv?utm_term=pixel+car+racer+hack PDF link annotation
    • http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/timekonurasipunekipi.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/mijeneduxujira.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/15287572745.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/76007613582.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/16076479a0f0c6---libuva.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/fl4ggl0ogeo3gmv5vurl5plujj/43434018304.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a10977d74cf---vijaraluwuboxuromupabake.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/nimijuxamegisufefo.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0955425730---mulejinilamiwedasew.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/77621543947.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16082a1ac12542---kedotalugofiwe.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16074217e1b2c6---vesanepiwuxugaligumalux.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/160761b1bb4b67---19119264853.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b59046cb0---72062056778.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA8 2880 bytes
SHA-256: aff11289bf87f92bc53c0e2abc335208e29b6db8a954e82fd0a5595ffa95d344
font_01_sfnt_off0000e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E6 4840 bytes
SHA-256: fc32e738d4d90348a79f36a9b2a8d3a5309cc0d3239135453b9005308a0b9291
font_02_sfnt_off0000f756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF756 11300 bytes
SHA-256: 6d779849a0e6342395f4c028f6842553fe084640880d8ed32731f5ed877beba0

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