Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6c1ce2ee9fc3a3…

MALICIOUS

PDF

114.8 KB Created: 2021-07-09 23:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: acd6e3d2b030cb76ce52ed62aaaf7032 SHA-1: 3bd01385967d70f330fcaf9800776dd8267c99fd SHA-256: db6c1ce2ee9fc3a39fdfc56d0b97f6ca6d859cc9c51192cf8e8bc50e1f6851bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://incasur.org/temp//files/tixegifuxidulu.pdf In PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a926f60dd23---96143604245.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/rudatewi.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986c8e7d1fe---11197315706.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/oq8d69t5lnpe81ffolq2otodii/jodinexifetobefujozu.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b1426fba5a6---kozoxanapemapezeviki.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/logoruxisuzepuwagan.pdfIn PDF document text
    • https://vidaleve.net/ckfinder/userfiles/files/85607026655.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/81155399320.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62857afc3e---24036332983.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/a3jr5sm1n24117hn1dhmn9o0jg/4725612825.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609be92e6c347---50263957700.pdfIn PDF document text
    • http://ournextfamilyreunion.com/clients/4/49/491fb30de6d8464ca6518fa43aba5bd5/File/pufuxepidovexakalakek.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/bitubelagowapip.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/21584157487.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021052916214373499.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7de95ec38f---kobefudowegoxajojozetegur.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/96092314597.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/73103458551.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/94892674846.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/3b2e707737d2da7a77d3ce80a62c21d2/pefib.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/9923923071.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=electrolysis+of+water+exothermic+or+endothermicPDF 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_off00015aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AEA 11028 bytes
SHA-256: 7686a8ad6b06d12f1cb558a0c5695dc3de8e31fd24fd371fe50b6a13dec06430
font_01_sfnt_off00017478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17478 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C8A 18504 bytes
SHA-256: 956a4b5648bea09bce8f3b533c0ee1d13c6f5669736764f32a5997f9f3a2e0b8

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