Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bec06d09f7d5940…

MALICIOUS

PDF

86.9 KB Created: 2021-09-08 20:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b5065b1b7fbed2ec025504074c3f72c3 SHA-1: b04bcfa4323b131ade42e1a174a776bf2a703910 SHA-256: 5bec06d09f7d59404dc1409293ecefe5ad78146d42873a2b86c5e33d4a92ff50
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model with high confidence. It contains numerous links hosted on compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of a visual download button further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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
  • 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.
  • 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://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161332903f2e72---kiruzasevosife.pdf In PDF document text
    • http://www.findvoters.com/userfiles/file/wotetazufikavif.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16138095f68abb---bajagogozexazujumefax.pdfIn PDF document text
    • http://muacuoi.vn/Pictures/files/kowavorumemipezifuza.pdfIn PDF document text
    • https://curtain.jinware.com/upload/files/31261395222.pdfIn PDF document text
    • http://connectcontrol.net/files/userfiles/files/34062478124.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612f448ddb7c7---62437198809.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c4c6f2676---70374590390.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/34fd64aa4241465d6af03cc6f64bda6d/59012075811.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/70ogova7b5o4pjcl54jajm6kp1/65900211499.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/limodufimowusuvunoxa.pdfIn PDF document text
    • https://computerzone.pk/file/79219971596.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1849ccfe137be2c050e138c744be42d0/48195803390.pdfIn PDF document text
    • https://alshuka.ps/ckfinder/userfiles/files/85031229636.pdfIn PDF document text
    • https://nucamsa.es/userfiles/files/bubig.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/balubinateloguledisem.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/28405087790.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/2bd3791e43f67f328a8c8180c1c5b6cb/mewurokavopozidatakug.pdfIn PDF document text
    • http://woori-tour.kr/FileData/ckfinder/files/20210909_6FFAAC820FC8A057.pdfIn PDF document text
    • https://hsse.hssanesteban.cl/files/fowidijowevusasuma.pdfIn PDF document text
    • http://badaranquehablar.com/userfiles/files/35547102220.pdfIn PDF document text
    • https://xosobacninh.vn/webroot/img/files/68955193665.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/vaxibuvozaviranolo.pdfIn PDF document text
    • http://maudchristan.nl/ckfinder/userfiles/files/liperagupox.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/161306c2daf6fb---39945010714.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/73622788208.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=amrita+imroz+book+pdf+free+downloadPDF 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_off0000ee90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE90 10848 bytes
SHA-256: 73d60677e0379168fd499cde57ab2c616a60b1cbcd342bb39a4f9ca9e0a7d547
font_01_sfnt_off00010777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10777 17904 bytes
SHA-256: b57bc5f3e45407badc259830d4654b1c282e3d06127266adc1ed10336fdfd91f
font_02_sfnt_off000135bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1