Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e1bfcabd294d7a…

MALICIOUS

PDF

96.0 KB Created: 2021-08-21 07:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0ff9655de8f7d6f0329d7e52a2466ab3 SHA-1: b13880ad7acd921f75175d118b671d75319d5ae4 SHA-256: 75e1bfcabd294d7ae4909d1bac8bcbc0c31195d83080eb1a6f34f9adfdc8b9b4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file 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. While no scripts were explicitly extracted, the presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates the document's primary function is to facilitate access to these external, potentially harmful, URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://kangs78.com/clients/66216/File/sopajafikasuvadonoxi.pdf In PDF document text
    • http://teamtrinity.net/trinitya/file/xixisusojuvijulogu.pdfIn PDF document text
    • https://mobspace.xyz/web/img/podborky/files/seruxedoxotojarafi.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/72ff9d3681e3c5036bd160f21b6f8b90/vodegareredarexujut.pdfIn PDF document text
    • https://suacuacuontoanphat.com/upload/files/fodav.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8ec44d310---40013451290.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f37fbb3f9d8---64995493225.pdfIn PDF document text
    • https://detmers-kontejner.hr/files/galokusape.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/0358719043ebc892accdad3957c63f71/kumese.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a83c1def66d---polazumetikuwomulabinupon.pdfIn PDF document text
    • http://norilskgu.ru/userfiles/file/15523636801.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name//files/nuxaxi.pdfIn PDF document text
    • https://maturana.cl/upload/file/toxuzexo.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/84787987769.pdfIn PDF document text
    • http://epsilonsigorta.com/files/26594490897.pdfIn PDF document text
    • http://abogadosaguilar.com/ckfinder/userfiles/files/mekugonot.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f104bfcb22a---sonosixujax.pdfIn PDF document text
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/c4171037c3f4de31728457337a3b49d6/13869709102.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0b3fe3dc2---fexumomepupafaw.pdfIn PDF document text
    • https://magerp.org/upload/files/792557313.pdfIn PDF document text
    • http://abwcrainhwy.com/uploads/files/lalibajabat.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/38894392918.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffe8cc57a0---fikupifejekukap.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160722afa9e2a9---saxobituwiwisuso.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160883500c7098---kexesusiwedo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=who+was+the+thane+of+cawdor+before+macbethPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0E 10820 bytes
SHA-256: 450df5d574d3bcf818870490612ee0fa3b33cdae62df90c2de0d51d34976853b
font_01_sfnt_off000116e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E3 16252 bytes
SHA-256: bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4
font_02_sfnt_off00012cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000144d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D5 16976 bytes
SHA-256: c30871a7e87f53a8bf77857b8e0547e4eb1b6d56e9e04f12cf0497ae6660a2ea

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