Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ab3fa34227b2ee…

MALICIOUS

PDF

232.2 KB Created: 2021-07-03 03:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a8b719eeb192807c8bd5bc78e444fa3d SHA-1: f524adfb1b516750c80497e927c9fdb86e1a4e5a SHA-256: 48ab3fa34227b2ee624f7043ff4dced6342f69e3964d9022df41eabe6a67ac17
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The presence of multiple external URLs, some hosted on compromised WordPress sites, suggests an attempt to redirect users to malicious content or download further stages. The heuristic 'SE_URGENCY_LURE' indicates the document likely uses time-sensitive language to pressure the user into clicking on these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://crewmak.ru/uplcv?utm_term=is+dexedrine+the+same+as+adderall PDF link annotation
    • http://gistfamilyreunion.com/clients/8/8c/8cbf0a40baaab9dd4734ff2cdbb1e120/File/lodufavi.pdfIn PDF document text
    • https://inncredel.com/uploads/jerodizodujes.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/67669173379.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/34849276100.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/df7f7321ef2c8aab86597f62fcb1ac10/mapijeragokosuterino.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0956f1731---93656352121.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/e38774099e9e7bce9866712906061312/83001236594.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e2703eebd---genibedezafedugozab.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/mizepidagodaxivozaxaxibin.pdfIn PDF document text
    • http://bsl-trans.ru/admin/ckfinder/userfiles/files/57564850388.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/86708544196.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/87fb88f22ef86386f70fef04fe10b233/fufomilagelupa.pdfIn PDF document text
    • http://chikatere.com/Upload/files/rakasawafizetawet.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/lobolusijakapifipavewadol.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095429db8918---puwivifanefoxelafakelawu.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/54669219556.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2ca8c83a7---kogobikan.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16098b254362b7---10909232995.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16090a5069aecf---zedugir.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/ganat.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/34140937642.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/3600f9ca32fb91a3f7336f1ca6d705e3/gevasez.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/46665798782.pdfIn PDF document text
    • 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_off000312e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312E7 22724 bytes
SHA-256: bb509fb3ff19644e7014f09d6104a61e899d44622f31046ecd2e050003d3f852
font_01_sfnt_off00034ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34EF5 5596 bytes
SHA-256: 2bb8c487ae9e23b3d6d7e7a2057fc42465770b5422b95315a9605dfe5a2cda75
font_02_sfnt_off00036290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36290 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00037aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37AA7 10444 bytes
SHA-256: 5490f052574384fda9a22c9b1a9f6d47f9b4fcfec184d7cf003b4c505fd8ab28

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