Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ba0594b4e94be9…

MALICIOUS

PDF

92.5 KB Created: 2021-09-08 06:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 611127ae91963b77ecd8f1175fff85ad SHA-1: 51f8b6fcb2ad6d3294b7e9593490129c6d46762c SHA-256: 50ba0594b4e94be93a76fdb187ed56ea71e52d17e12f8d9cba209a971d6eb01e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many hosted on compromised CMS upload directories, suggest a phishing or malware distribution attempt. The document's structure and content indicate it's designed to redirect users to external sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a9662088eab---14074907584.pdf In PDF document text
    • https://alrukn.co/userfiles/files/kidesukukobubade.pdfIn PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/2197066411.pdfIn PDF document text
    • http://kapsalonindex.nl/images/uploads/26462145896.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/73d00353fe87cb99835c6b96f2ef4ce9/91793244456.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/81d15e30b87bd76a6f1e2143659205a7/tizibujeriwetomoneb.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/1529520152.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16087607a9e0d8---39852404883.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1534396ce---lepatu.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/ccc4de111b928c2ab2d54cc21e3754a6/gegevubiwukezekafovud.pdfIn PDF document text
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/46650497651.pdfIn PDF document text
    • https://gangnampools.com/contents/files/58778431459.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/sirodedesizovotavazoketi.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/xorigij.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c74823f3863---savudafoti.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/85103706299.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/mp4od6jv8blsjq941h93slunb7/8653178699.pdfIn PDF document text
    • http://novosib-sport.ru/ckfinder/userfiles/files/ledorawuj.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/toxabivabuvakirowi.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/98820249134.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/dd3db48909c372ce7ee970b1c06751b7/51711929687.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=pdf+rapport+de+stage+cabinet+comptablePDF 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_off0001017c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017C 18948 bytes
SHA-256: f7716c9c6a303803b008febc30e4bf8892f2f7e2071e159210baafec2bf27de6
font_01_sfnt_off000132de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132DE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AF5 11104 bytes
SHA-256: 7953b46dab12df99ab22aead8c842016e780612902150636783f6712c643c52c

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