Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c2c4ebd8782cd4…

MALICIOUS

PDF

75.9 KB Created: 2021-09-01 14:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6dbd56170f889b4b3b945810a751a75c SHA-1: 578dc9b85753006ec1d0b73839518fef87ce8bfc SHA-256: 02c2c4ebd8782cd46dfbf04e7e31cc9555f7f21e6edcee82b7b1127ad5a3888b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress upload storage and other disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The presence of these links and the overall detection profile strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/f28920782e140776aac6c356023a78cc/67558900114.pdf In PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/4b4gaee3rq7jlsk27eh5btbqa2/37952223453.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/96avg92au8vogenebvujvd88nc/69890315805.pdfIn PDF document text
    • http://studioingegneramato.com/userfiles/files/simusakofepekukapexewuma.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/felezekun.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b5ae05891---24089108451.pdfIn PDF document text
    • https://whatshoulditcostme.com/userfiles/file/75019501250.pdfIn PDF document text
    • https://sarna-zapiekanki.pl/ckfinder/userfiles/files/zawitut.pdfIn PDF document text
    • http://guinyardfamilyreunion.com/clients/62985/File/84628717422.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/9bacdafc8aba37732ed8e914372d1c1e/vexirotoxivub.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/v55hmj2q2q46n9dbcktk9ifsr7/jotobaxoza.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/bepifuzogumolitosafo.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/30013237146.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160818c5417960---18679011587.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/59db92895ca0b3b412d017dcb89bbc99/9784714899.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/31157518832.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf76d40d9a---85981917110.pdfIn PDF document text
    • https://seeyounow.net/userfiles/file/39771224135.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/d3b51f588ca15a5ffe6cfe1e90d6edac/52137665988.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/ene69jghhvaps7al47ne2h6a4c/99540324974.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image//files/57563723971.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160730bebed42f---94076625856.pdfIn PDF document text
    • http://www.drivingschool-brno.cz/files/files/72683628265.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/56325862093.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+get+to+ringed+city+ds3PDF 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_off0000c461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC461 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC73 16852 bytes
SHA-256: b466ea900444930863ea542620cce1c37adecf841759871efc4ccdfa62dcd5b3
font_02_sfnt_off00010762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10762 10700 bytes
SHA-256: 643e86b41f85e0b06f884a7c610ee60dcb1f1f70ee86db9e0a34442524a7238a

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