Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2937694f6549d9…

MALICIOUS

PDF

83.6 KB Created: 2021-09-15 00:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 11767c071835e97a7f9064d75e54b8ee SHA-1: 6281610f698935ed83a7135e7cf48cf87599ce5b SHA-256: ab2937694f6549d90528c1b2c43cca1a01585424396b3d0a0b87b1d39afe9e63
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's designed as a link farm to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://allytemp.ru/uplcv?utm_term=samsung+galaxy+s2+prices+in+sri+lanka PDF link annotation
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0387bdd35---lekulezaxaxuferujenavoz.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/161410f58df46b---tozenajibu.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/80141394040.pdfIn PDF document text
    • http://deleeuwputten.nl/site/data/ws/files/favedapelanuxexotatiribe.pdfIn PDF document text
    • https://termoformat.md/img/files/4261935197.pdfIn PDF document text
    • http://aotwcasino.com/ckfinder/userfiles/files/rotadoxozetazivenupusakov.pdfIn PDF document text
    • http://360global.ca/userfiles/file/lixoduponuso.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/465811e63ecd6a55c890244b97e2dd8c/64013078425.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/64979174726.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16134ae43bebae---69217548693.pdfIn PDF document text
    • https://thietkeweblongan.com/upload/files/koges.pdfIn PDF document text
    • https://szallas-karpatalja.com/upload/dosil.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/43896409492.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/paneje.pdfIn PDF document text
    • https://somos.co/dleyes/admin/fotos/file/4576054310.pdfIn PDF document text
    • http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lulisijonepodiguribev.pdfIn PDF document text
    • http://ilturismoinitalia.it/userfiles/files/52252844561.pdfIn PDF document text
    • http://dh-life.com/ckfinder/userfiles/files/49485974665.pdfIn PDF document text
    • http://cistenivytahu.cz/upload/file/95200533686.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/86144327138.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/jutagelafixoza.pdfIn PDF document text
    • https://alarouba.com/ckfinder/userfiles/files/73575735399.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/3034df9c47d21992c87058789952735d/wenefuvu.pdfIn PDF document text
    • http://vrieshorst.nl/images/uploads/file/11352723087.pdfIn PDF document text
    • https://lawrenceyezersky.com/userfiles/file/vuwufenesomobasotil.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_off0000e087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE087 17512 bytes
SHA-256: 2126a527ddfdcf16c1b6481f3d5563d9ed3b38fbf66bee40f389fc834a7dadfb
font_01_sfnt_off00010e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12670 11100 bytes
SHA-256: 06a90ff687462d9c01d465b6db30dbf5cb0e31bf0b6a68bb97ca79a7a56eda72

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