Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29419d9d3defe4e…

MALICIOUS

PDF

82.5 KB Created: 2021-09-15 21:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 70909de38b3b961191ec04fcbae72143 SHA-1: af9d661c2d0756a3bb6ea7970f44a9bde0722c58 SHA-256: a29419d9d3defe4ebee2ccfe256439d1236c6a7a57b9c45c6693406ffa2240ed
172 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a link farm pointing to disposable hosting, suggesting it's designed to trick users into downloading further malicious content. The presence of a 'download button' lure reinforces this phishing-like behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.koeru.eu/failid/file/zuzulisomozojemipatowet.pdf In PDF document text
    • https://alutat.com/data/file/durebegojapop.pdfIn PDF document text
    • http://www.ondebiz.com/userfiles/file/81567358252.pdfIn PDF document text
    • http://laduses.nl/image/file/71407932093.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403f80b547c---sopedaper.pdfIn PDF document text
    • http://decoworld.in/dayafter/uploadimages/newsimages/file/tepusumagatak.pdfIn PDF document text
    • http://glassick.com/userfiles/file/pofatubop.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e58f02d56d---vekoberutileb.pdfIn PDF document text
    • http://ktcz.eu/files/files/xuvepopav.pdfIn PDF document text
    • http://1day2night.com/UserFiles/file/89330019936.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/51867610699.pdfIn PDF document text
    • https://csodamalom.hu/files/files/31518107546.pdfIn PDF document text
    • http://modero.vn/upload/files/lewegusebisotokatefopeve.pdfIn PDF document text
    • https://isigakizima.net/img/tmp/file/gorumamusepolumim.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/nogogorufetulotirog.pdfIn PDF document text
    • http://studioiulianella.it/userfiles/files/sezonavuvus.pdfIn PDF document text
    • https://kalimati.in/userfiles/file/66441095652.pdfIn PDF document text
    • http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/3340273644.pdfIn PDF document text
    • http://aburobocon2019.mnb.mn/uploads/files/74404378246.pdfIn PDF document text
    • http://beauty214.com/uploads/files/202109031901574680.pdfIn PDF document text
    • https://cortemadera.com/wysiwygfiles/file/39894865738.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/miwefakurekupis.pdfIn PDF document text
    • https://www.eos.org.eg/ckfinder/userfiles/files/71403952371.pdfIn PDF document text
    • http://autoneza.cz/UserFiles/File/luzamekakufejabonuko.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/rkk3502gm64ghj691n0v62l8p2/kiraveke.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/vilogovefijogaxotogibu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=download+transformers+forged+to+fightPDF 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_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E6 10888 bytes
SHA-256: 7010a681653df71095ef77fb10c778bc953041680d4c33db36f54dede4ff94d9
font_02_sfnt_off00010cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB5 17988 bytes
SHA-256: 210a84a93d7440f4d0014e708381629d8075081002da2cc09790258b4cb132fe

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