Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4703eb3e8a28f95…

MALICIOUS

PDF

92.9 KB Created: 2021-08-30 16:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f8466f626ac3a4d7ed1df6cfb9c15bf4 SHA-1: 7c500de13acffb29de3b1e9d59e151d2fdb208f1 SHA-256: c4703eb3e8a28f95d48e331d3e8c664fe75f3ecdf6813f5c3709d5017b9c0928
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting. These links are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3897

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://pisangmanis.com/contents/files/64304765049.pdf In PDF document text
    • http://wadsoda.com/UserFiles/File/sukonejivawusasarivowutez.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/gigabokidopat.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/roxodexevexevizilen.pdfIn PDF document text
    • https://dafelia.com/files/pixurixosubirin.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/sinifofevawesumig.pdfIn PDF document text
    • https://mtmhomeschool.com/mycms/uploadedimages/editorUploadedImages/file/14335438499.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/f3021d634bb43f6a18ba14cd1330e000/54143128457.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b5832b106e3---30819887581.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee3c828287---zefezobu.pdfIn PDF document text
    • https://zold-kommando.hu/files/migud.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083a8b7a8d69---69684560554.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073653678efe---jefoxuvojanitago.pdfIn PDF document text
    • http://puppies-4u.com/clients/e/e7/e7f09595da74c05d2059c741134300d2/File/wejenobogawisusuvizaje.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0f2348a42---wavub.pdfIn PDF document text
    • http://dfanchem.com/upload/files/vonos.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccf7981a800---37524836790.pdfIn PDF document text
    • http://computergramm.com/userfiles/file/58164629584.pdfIn PDF document text
    • http://istrouma1971.com/clients/9/9b/9b88b062b8d6af44b28e209fcb06d7d5/File/22283736926.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/relavenibigetibi.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/gc5hj8nb5gstjo7iefg338jp5d/20880586741.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/sabc0m64bbkm4g4kfvgpfn12r5/sokomi.pdfIn PDF document text
    • https://cubic.is/userfiles/file/lobafixixo.pdfIn PDF document text
    • http://greaterdeliveranceministries1.com/clients/61527/File/87609983125.pdfIn PDF document text
    • http://trungnguyenjsc.vn/uploads/image/files/76446234170.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=witcher+2+quest+listPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EA 19440 bytes
SHA-256: 9e452abf4b83686546f649047d6786ac777ceb6d653ce6b25ed9ad320ecb4184
font_01_sfnt_off0001494a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1494A 10300 bytes
SHA-256: 72c26f81399f1e5f2a30a773676f7c155f465fcdc382899fbbefca791368e9f2

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