Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abc29a0714c9ce8…

MALICIOUS

PDF

82.2 KB Created: 2021-09-06 04:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6801e25695af220c8760f1e88866aac0 SHA-1: b24a2c3e94b3b88b1c0186b1e134e932f53f0e4e SHA-256: 6abc29a0714c9ce8915bfca6a725737ddbbb2b1c26b96a8e6efd0e7d5adeb6c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are structured as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to potentially malicious content or phishing sites, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://thedreaminitiative.org/Content/Admin/uploads/files/43286938240.pdf In PDF document text
    • http://leaguengn.com/userfiles/file///xiparutinom.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/118f1d954e6ae78d3b4f4df404fee5b8/tofeduwutomof.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/xezesedo.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/cc2cce6ce1c48c92c8e65a32ccc65cd0/jalanuxuk.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/5fb6386b55040e1e5f2e8cf40a79f285/81675721100.pdfIn PDF document text
    • http://stlukesmn.org/clients/17773/File/9823495183.pdfIn PDF document text
    • http://thienminhgroup.com/uploads/userfiles/file/pifujagemetopimi.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/xutav.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f5e075783---garepusudoxuluw.pdfIn PDF document text
    • http://fine-trading-knotwork.de/uploads/media/towopep.pdfIn PDF document text
    • http://wisewood50th.com/clients/3/35/35ca2b70ae131fa39667c240906a3fe4/File/zekizikesuxifebubutirem.pdfIn PDF document text
    • https://kasihpaham.com/contents/files/rarulinejabalokavozufez.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/3dd1d8482f9deb868a1357d4c3e7ae60/85394371784.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/4ec8fbeebb4a856c842578409bbd5377/lawikozuwapedelular.pdfIn PDF document text
    • https://miet.hu/kepek/60132123715.pdfIn PDF document text
    • https://netiko.ge/img/Data/file/59553250463.pdfIn PDF document text
    • http://agriturismofattorialucciano.it/ckfinder/userfiles/files/sedaliwisozi.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/c38597defe1fbebe77d1d77f8f3a0200/lisoxudirirogofamapuwol.pdfIn PDF document text
    • https://kurashi-kyoiku.com/cms/dat/upimg/file/13215899745.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/15173759713.pdfIn PDF document text
    • http://sevoir.hu/uploads/file/ramudanaguzezipodanix.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/kunorokogozo.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/48449848080.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=convertir+png+a+pdf+editablePDF 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_off0000ddcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCF 17108 bytes
SHA-256: 8ac3bd44bf072d1ac8e1415ce069a01caa84cba3db3a2f10d4c096d2d931eea9
font_01_sfnt_off00010a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A37 10740 bytes
SHA-256: f00c81b0c286e1c03167b39f60f4a5b16f7bbefb494461a202d759a9da9468e1
font_02_sfnt_off0001229f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1229F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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