Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2ee3dc26a44412…

MALICIOUS

PDF

85.2 KB Created: 2021-06-28 12:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: f036a54c3c0586accf4e53e3d732b88e SHA-1: 326c5d4657579f857db38bbe46ca5f71a0cfdb60 SHA-256: 8f2ee3dc26a44412e412242fa964b272f3d9279baab991c1e2c99ba650ffce5f
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains a link farm with numerous URLs pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://galerie-louise.be/userfiles/files/18337679216.pdf In PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160837e0566292---bekozoguwamozibatup.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/9f6fab6910b64fd2de04be6c4ca537a0/vumotemabavijozaxumuvizuw.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/32646317627.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/87520023435.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/plkk8fsuhse8fnhfgjb0p2hei6/jixuwavob.pdfIn PDF document text
    • http://www.nomorcantikspesial.com/file/pudegivetoza.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609c783ad2dee---megibagiremifikixeguxogo.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/19547858401.pdfIn PDF document text
    • https://irantruck.ir/data/file/63365553116.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/87673ed2569f70e4732a2d961918da80/xofanuzafikamutu.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/b9tgnik1ptd8rdgg079qsmcbf1/tuwumukokixo.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210531_24758E794806FC8D.pdfIn PDF document text
    • http://barbusci.it/maisUserFile/file/7305388817.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/besudevijimovoviva.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/46712261823.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/xewuguxuxegobole.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607efb3f4a425---minejadejebakuxidupifovef.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16070102c4c27c---24620348862.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/75bb9bad82600f5d6662bb049d29e31e/nozaratibiveji.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe8998207c---77563672155.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/17638263305.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=right+eye+blurry+visionPDF 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_off0000eb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7D 16820 bytes
SHA-256: d692e9c844d9430b142139b6adb15975dfcdef343ba29ed155c38d449776b748
font_01_sfnt_off0001171e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171E 10688 bytes
SHA-256: 0ed8410a8a3043098f976305a4072996ba7cb038922c1b145c7ed19d3171438b
font_02_sfnt_off00012f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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