Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f9c9686456977a…

MALICIOUS

PDF

81.5 KB Created: 2021-09-15 15:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f0b07e1ae19707760c760b3f1d385057 SHA-1: 2a40944a9401388af4291a2f4c36302fc0a8d877 SHA-256: 45f9c9686456977af06f4245f0091c07d8ec84155e08e85cb17b91a655a3bfb9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of numerous URLs, including those with UTM parameters, suggests an attempt to distribute phishing content or further malware payloads.

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 https://drafthe.ru/uplcv?utm_term=block+app+play+store PDF link annotation
    • http://flagrant-desir.com/userfiles/file/widuwobulisegapived.pdfIn PDF document text
    • http://flashdisplay.net/UploadFiles/FCKeditor/20210908143716.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/mogefikemoxemadosozevad.pdfIn PDF document text
    • https://magicdiscoradio.com/userfiles/file/92089220050.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/givutazuz.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130783ed3ff0---78806664644.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/wefedatebexojizerakam.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/gumugini.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pitewizuzeweripiwomowuraf.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/2a31f32644fda5b4a2f62048ac716083/39536352718.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/70846291401.pdfIn PDF document text
    • http://servicedental.it/userfiles/files/74726182748.pdfIn PDF document text
    • http://metallpress.ru/files/jejeliwiwilanexexebuxumev.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/disipekasabulonowovod.pdfIn PDF document text
    • http://cokhiminhhien.com/media/ftp/file/gugokurodojejonafuxebi.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/rapifod.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/jabonewo.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/viwumojofimekeguka.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/161366a4195110---63351518641.pdfIn PDF document text
    • https://media-get.ru/userfiles/files/pawanurekexaf.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4d6b21093---rumajixis.pdfIn PDF document text
    • https://bulgariapools.com/contents/files/97128370058.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/45252802.pdfIn PDF document text
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/luzodesofa.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_off0000da86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA86 17736 bytes
SHA-256: 6480e93d29afdd39f26b42c81314eaa5cb9489cff6afb7cd10e5a2e9cd8c9e6a
font_01_sfnt_off0001087a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087A 10432 bytes
SHA-256: c3b04185d1a4d9292f2f6dd6008190517e9333def84b3bb722714973076b4737
font_02_sfnt_off0001206d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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