Malicious PDF — malware analysis report

Static analysis result for SHA-256 455749ec5d57c496…

MALICIOUS

PDF

84.6 KB Created: 2021-08-16 20:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: dcfc65b4066e52213e9c34f4c7612c6c SHA-1: c1351b1cfa009f128af656e54beba1d27f129025 SHA-256: 455749ec5d57c496c182a3f9dbe0a3d9703c759e06a058187b31033f487f84b7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://allytemp.ru/uplcv?utm_term=cuckoo+rice+cooker+manual+english+pdf PDF link annotation
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088802c592f5---kuxefakukozamilajugiru.pdfIn PDF document text
    • http://5lovestartw.com/CKEdit/upload/files/lumixunijamulefesedi.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f9d439eb47c---15275421168.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160749dbeb44ec---9243751065.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/aa03c46c7b1630ca66348e5f25d883b9/9778725412.pdfIn PDF document text
    • https://csodamalom.hu/files/files/24552303551.pdfIn PDF document text
    • http://tradeweb.es/userfiles/file/zozugorom.pdfIn PDF document text
    • http://apcmagon.com/userfiles/20907045355.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/uefj89b4fitb6ho7l67h40dcb4/35616498787.pdfIn PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/jefojojuro.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c153e05f89---58740332242.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160817c38b799d---87112310535.pdfIn PDF document text
    • http://sanmorales.es/userfiles/files/latobasaveridikitajanoxi.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/zaxanazozugetivapobakaro.pdfIn PDF document text
    • http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/korax.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/8f2f1a7e9014cb4fbd009e1525766627/41624671964.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/31554536390.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a964e810783---41504262211.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/jabukekujasadog.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/e67bed8eda624bd2fdc806584508984d/wufevadavorojuradozil.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0ef3314ab---fadurenanupinijoriribado.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160874b15bf7ee---zapomomaxil.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/97472902755.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/zovofokidiwaraguwu.pdfIn PDF document text
    • https://peterdegendt.be/file/26498305263.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CF 17316 bytes
SHA-256: 6630bcc54aea18d5e3dd351c8eaa6ee204505a2e413fa39c1e8d7ffe76877da7
font_01_sfnt_off0001121e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1121E 11192 bytes
SHA-256: 46b0d65ab8eceef461742b23933418e5f7681a96db5b662f6a37b5854acd55ed
font_02_sfnt_off00012be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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