Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fdd5f9d582c24c…

MALICIOUS

PDF

87.6 KB Created: 2021-09-06 14:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0ac1db861271621b6682ceeba57366fc SHA-1: cd93d07c845ffabdf3b049324d6e5dd3c3310219 SHA-256: f2fdd5f9d582c24cba572862e955c2b610be0eeaa670ede08ec874d0087d00c5
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution lure. The presence of these links and the heuristic flagging of a 'link farm on disposable hosting' strongly indicate a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0416f521da---97092592862.pdf In PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/b271e3f41114a8080c69f82090e72251/26548394526.pdfIn PDF document text
    • https://astek-telem.fr/userfiles/file/pudimelegerogosisa.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613492f454be7---19015552415.pdfIn PDF document text
    • http://crmloccitanecr.com/campannas/file/37463187406.pdfIn PDF document text
    • http://randalljroutson.com/clients/44711/File/35766671713.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123ceaf8ac66---belusonagopa.pdfIn PDF document text
    • http://valeneighbors.com/userimages/ledurepuf.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/21379542670.pdfIn PDF document text
    • https://rinducm1.com/contents//files/28105504644.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/622aae0de7b728fcc3aa9c40fd84860e/rilogekavukujisuvi.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3462b56e3---ginelomukifubemapeniv.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc4c2a444b---muwoguradirezegejigav.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607e03c519bc7---banubuj.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/1iq5mrolqoqmmd1399843g32fo/51984278572.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/2f9a18c8b3a6c97fe7efcea56eaf70df/39515761523.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f2fa3d9ae---82752039443.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075e820caece---80135169304.pdfIn PDF document text
    • https://elegune.net/files/galeria/files/powerozokanukujuma.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/8tevijlbdklg62mi56p52ejusj/zegidikaxilazuzuninamofo.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3e8f907e3---98543560230.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/puvibu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=accounting+principles+pdf+notesPDF 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_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 17408 bytes
SHA-256: 21a4bdd47f82ab7e2b12a06ece06f9e7f72cfc769ee33e7baec4c1754a0031d5
font_01_sfnt_off00012023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12023 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001383a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383A 10712 bytes
SHA-256: 59c9b4d723d45f055fe65cbc2c54137a5b374e082caafc30c70a04fa4ba2067d

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