Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bab05f24234ca7e…

MALICIOUS

PDF

82.0 KB Created: 2021-08-16 09:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 2ff59f9019b763a35c9e653b203df439 SHA-1: 6d9a12a9931f1017e65fc8c9052986986532b13a SHA-256: 9bab05f24234ca7e9f788e2daf719b54acb8d4276954df743813ffcf5c7b6067
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm used for phishing or malware distribution. The PDF structure and embedded links are consistent with a spearphishing attachment used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870b6d4a90f---xaravebaxijafewikupome.pdf In PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/deteruvaragixiko.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/fpv63q2klhf1pg5bjd0bahkkc0/pojerar.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f9df1e3c2---6672717857.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/gmh9035bugtntcof6ojsnbdbg1/gatipisazoridag.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/25676160381.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/1048d68cd42624e456a45f9c5f8d392c/xelewixoru.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/2n634q7foott9ounrp784en9f0/72654597406.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/59547280968.pdfIn PDF document text
    • http://tara77.com/clients/46590/File/50155459913.pdfIn PDF document text
    • https://biothiennam.com/media/ftp/file/fumopudikolekiliku.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/vvfvmm8kcjhrp1sflqbuubcag6/pikugikitasebenu.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073077d91ea5---potiduwunisalap.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/695097908691621076189.pdfIn PDF document text
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/72664281088.pdfIn PDF document text
    • https://wheelmartthailand.com/image/upload/File/60380068777.pdfIn PDF document text
    • http://ac-kenigsberg.ru/files/file/mijubezolu.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/77760234867.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/6253170a033b3af146c95692751d8840/75238587365.pdfIn PDF document text
    • http://wallawallahighschool1968.org/clients/75819/File/reluzimozo.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/e7a885a974406856cf17a4adcafae3fc/fetukekidadu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+fit+ickle+bubba+isofix+car+seatPDF 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_off0000dd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55E 10736 bytes
SHA-256: aba3648242972f0ebc8dee3d9669e8be7976a7546441bb8203338502454e6f50
font_02_sfnt_off00010e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3D 16940 bytes
SHA-256: 5891653522c175a746ab753d1346345befae82bea0f3c1ea8c1d5e56b0492ca2

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