Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1868e2cfd6c95b…

MALICIOUS

PDF

74.2 KB Created: 2021-08-21 19:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c013644ecac6e55f91bb4f36f9caa177 SHA-1: a42ebd63497a44ab16e524639b461ca6616fff5d SHA-256: 7e1868e2cfd6c95b49ca03d833bb0a31a0a2c17a971cb4ee67ed76fa1e57ce77
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as a phishing lure due to its structure, which contains an image designed to trick users into clicking embedded links. The heuristics indicate it's part of a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content or phish credentials. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 74 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://koreabulk.net/userData/board/file/wuxavezegomumalogogevane.pdf In PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/3576f774c25dcc67c2a0d377af359285/wanirariduwexosezu.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/spp96uofqs7a7b2hrmbvsj6vnr/92611348291.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/jvnchkcb879ujociqhooj9hie1/kogisunotodimenifos.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/gageb.pdfIn PDF document text
    • https://digireg.com/upload/35391100242.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c90a838f1---17593158993.pdfIn PDF document text
    • https://actorconseil.com/files/file/3197513663.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/3aaebac1b6faee672d07d2bdcd9ccbc9/44152586861.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a4272389e05---kelilukes.pdfIn PDF document text
    • http://robbes.nl/media/files/rimamajeroguzurepunim.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cd9f38b7fc4bec2c445d25140c975b7f/dogef.pdfIn PDF document text
    • https://latrinquette.com/upload/editor/file/35409004671.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/83015600726.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/fufakupewevubazif.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/e70fd36d9eddf8b4ff51da0c433fc0a9/54175488043.pdfIn PDF document text
    • http://stonebreaker.at/vefedoxefog.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/0a5ec2ad81435a97bbfd92f4adb8b452/97108548405.pdfIn PDF document text
    • https://minegociomiweb.com/userfiles/file/bibefoni.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/aa952f78e69bb58ca1087adac9a09a95/livufepezetufawupe.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c487699ab5e---60649186354.pdfIn PDF document text
    • http://exantusfamilyreunion.com/clients/9/96/968554593547eb574606130639276270/File/wosejofuteraduw.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/jhdpethkg2d8a6uc4voe9lr2e5/majatowalugi.pdfIn PDF document text
    • https://drisraadentalcenter.com/userfiles/file/11849331962.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161169b9277ab5---gubusedopafubotudo.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080609935891---rijonukobudawifog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=benim+hocam+tarih+konu+anlat%C3%A4+m%C3%A4+2018+pdf+2020PDF 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_off0000c26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC26F 13904 bytes
SHA-256: 3942b75bf422b398196d4dd8ec5550dea671824f6bf0876acdcb2ad0b5feacf4
font_01_sfnt_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 11720 bytes
SHA-256: dc1f16b024fcf6babb0b15ebe5cd067a51e422988ca3bcc211c991c8738fcff9
font_02_sfnt_off0000ffad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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