Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ecd7ce3c46c9b9…

MALICIOUS

PDF

63.7 KB Created: 2021-08-26 12:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 76c7e6c37c1363d3777ca7156b6471be SHA-1: d8cf5507908076ca726410a6487c8d7eaa84a222 SHA-256: a9ecd7ce3c46c9b9184427d8a2e1edfb14d05c0344d6fa30c7504d198d926dc5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document detected by ClamAV as Pdf.Phishing.Trojan. Heuristic analysis indicates it functions as a link farm hosted on disposable domains, with multiple URLs pointing to PDF files. The presence of embedded URLs and the overall structure suggest an attempt to lure users to potentially malicious or phishing content, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8378

Heuristics 5

  • 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
  • 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://leilehua76.com/clients/4/4d/4d80c013f15dbe3c797666a457780dca/File/32646246470.pdf In PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160adff6b30e85---50352596158.pdfIn PDF document text
    • http://starlightcelebrates.ca/clients/4/43/43e9139217482d7666ce300faf566241/File/siwarewapefemoximiv.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a487e703---69446373034.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/zelapetoduli.pdfIn PDF document text
    • http://myslizdrave.com/soubory/47210860320.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/n5vt7qg0agmhqur6jaah5devr3/52473008142.pdfIn PDF document text
    • http://abpaluso.com/upload/file/ralakowanunuwamobuvanaxan.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfed634bdc---kugifananisupetopege.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1294b422ff845cda079631f53123ac3a/soderikasikebujomilaloti.pdfIn PDF document text
    • http://mutitar.com/user_img/files/61874035437.pdfIn PDF document text
    • http://kovtec.pl/eurostyl/photos/file/14181606750.pdfIn PDF document text
    • http://danguykhoidoanhnghiephp.vn/Upload/files/buzevosepereledexaxoveb.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3b1dbdcf4---witejogajilu.pdfIn PDF document text
    • https://motoquadro.de/userfiles/file/25103569240.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/daguvo.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/buwarizovozam.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/powajotoworax.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160967365ea6f2---lewiwazadomogulo.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/kmsvjudqgv9gj478prsjlh7n23/gudasoletorerife.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=capital+of+connecticutPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD941 10336 bytes
SHA-256: e368afa0cd0a4a68952988693c0185e49d9e9195ae8d6268eff917b102cc904a

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