Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0170fee9ad1fa4f…

MALICIOUS

PDF

67.9 KB Created: 2021-09-01 02:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 89ab6c8edb3ff2a7fa56e3b650509964 SHA-1: c69271b76dabbf633dda94d8d7817b8d438ba91f SHA-256: b0170fee9ad1fa4f3450e968bc443e6c899f91eaf5b153ae0662dfbfefae84c2
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL analysis are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8752d9c08b---misalutijefo.pdf In PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/waravefodananujes.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609498d7ae18e---tidanimokeb.pdfIn PDF document text
    • https://bselink.com/userfiles/file/47136621776.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/6q2ih5jjkrdaqbp01shschqabk/gifibofoxoterewuguzilix.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608357fe0ae24---gipebokoxatovezetor.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/wikinet.pdfIn PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/9f528764feb0fc521832db7d81fa9a90.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/tolevadiliginenuxow.pdfIn PDF document text
    • http://formpart.com/upload/ckfinder/files/muneruboxezololeredaboro.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4ecb8e81f---nesokepofuwamo.pdfIn PDF document text
    • http://vidol.nl/userfiles/file/89327663135.pdfIn PDF document text
    • http://feriaalainversa.com/uploaded/files/ridepidolazineti.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797b803e2d5---wofibawenatudogiba.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/4k5f7r5sr1m7574i9s8n1qlbv0/katulutek.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16079741018841---38911075827.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/zutobokiwoxedusog.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/62123270063.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/34b72411f5d6ac31b4483cb6ab8085ff/52625549244.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd5b001c63---88845853174.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/63951996129.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d6617540344---fazidoriruponadepex.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/76783107080.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=baby+veggie+frittersPDF 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://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_off0000b1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B6 10492 bytes
SHA-256: d6a7218b8e736dace46620d3e7538fc86fec6693fa14c14c9db7508d8eb7a84a
font_01_sfnt_off0000c9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C8 14544 bytes
SHA-256: 9f26a9ab5cb09bcbc31dba00fef86b2d8ad899f45953635f5ecf2703e98cc66d
font_02_sfnt_off0000ee15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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