Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d72bd2777c39bd5…

MALICIOUS

PDF

98.2 KB Created: 2021-07-20 10:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 00bd7c6d51409352460a64420c5c625f SHA-1: edca1a111522276e1cd32eeb7589285590a67218 SHA-256: 9d72bd2777c39bd5f6b8bc9b04126feafd6ca26fad6c3defa7eb1f7fbee3aa52
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/psath8geo8cfh4tncoadgcjp0u/54199927693.pdf In PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14d91c53b8---wodipepebubedopudekoluj.pdfIn PDF document text
    • http://misspacificus.com/clients/873634/File/nuvapibaje.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f33622f06---xotanejobosufafamaxopanid.pdfIn PDF document text
    • https://bepxuyenviet.com/upload/files/85571319141.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/tetozazawimepebenu.pdfIn PDF document text
    • http://pensacolahigh1964.com/clients/1/1d/1d652d7f5bd5fd2f3712913460b20393/File/23593671809.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/gte7l5mtj27j7qnqthdmr1qon4/redotip.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11c7dacbcf---64719295241.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9353d6d65---zigapux.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/pk54dm2umg1kas7ecbdc3882m1/96400735321.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160abb1dc3bfb9---mutepazemuku.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/ed6649a94da26c15c557a816ae628356/nukuwerufivato.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/60049896799.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/81e0b41a887e34a8034a71b1848540a2/16983085987.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/1bdccfa41dc4108f2e3ea7ae09def16c/belitowibozewazawoju.pdfIn PDF document text
    • https://signika.pl/Upload/file/vovesopo.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742c3b76d9b---76859287240.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/2d47mc42aam4f3foa1e5imcec3/83545473497.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/5e3f81625aadbace759379f45a04d75c/werogotudopujosimoxaw.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/b1djodrdg8l7anu5q7lt2pi0s7/81458641073.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607921b7981aa---93533131855.pdfIn PDF document text
    • https://tckontrola.hr/files/82674039608.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/4c88db8466b65ff6c66966e05c63cdce/zesavebafofuroxili.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=the+depression+cure+6+steps+pdfPDF 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_off00011c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9F 10740 bytes
SHA-256: fa642b5a04cdbb13816cf098d6990b76d24e51749c132cf86816aca5e2e91980
font_01_sfnt_off00013544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13544 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D56 17152 bytes
SHA-256: ff4f8ee31e744f70f7e1e33527edffe2e2579b4c3077013cf74bf2e2e77eaf1b

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