Malicious PDF — malware analysis report

Static analysis result for SHA-256 47893ded61c69126…

MALICIOUS

PDF

78.1 KB Created: 2021-07-18 09:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0f06b941a83038fdf78effec7e980ff1 SHA-1: 4d2a6edbf31bf38f1d8de1fcbc99b0425cdd904b SHA-256: 47893ded61c691266f6c8ef1743062aa290ea90a1c9c01318fa575bfec3d316b
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, indicating an attempt to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery through these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5624

Heuristics 5

  • 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
  • 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.propertyadvisersaustralia.com/wp-content/plugins/super-forms/uploads/php/files/5a4a4c151381bb6ec9f5fb9eb47ddb49/temavekixofasorukodu.pdf In PDF document text
    • https://noblacklist.pro/web/img/podborky/files/puzovikatifakorukijax.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb678ced9c7---63063482143.pdfIn PDF document text
    • http://jingluo.net/uploadfiles/files/95946731348.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/853a9503f5b00541e3c58bedc65bb8e9/61799437406.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/b97df5bc22598c5a1aa835d11c7be60e/wamuxurupaj.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021070814101073499.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607af9077a0d8---duraloratif.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/liweloxiwivulezijoguridez.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/79183396386.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/7bf7b77e33e02d25859e598aebe5b19e/belud.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/tudidepum.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/53glek33r7i5olc37hsok0uha5/xamegazijapedebuluduso.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16083c9f3e90b2---lamokovexofemuj.pdfIn PDF document text
    • http://berries85.com/clients/4/4c/4c86f126b1006e50d570d35f0f20b0f3/File/93517374353.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/409abcf297bb0b9d3dd208d89ad76b1b/93478002761.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/6234ea55facc2ac20526d5ca3f8ee83c/69435083748.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ffc2c843f---nixolobe.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/17962303640.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/9b79b9b2b4f170375af76dd55be3c86c/12000056785.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ecdef207f---luxuseluravabi.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9778637f95---1584869091.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=how+much+are+fortnite+accounts+worthPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EC 17720 bytes
SHA-256: 111dd586130bb580625fa987fb470ec59e79451668dc2e3deabe73665b4ddc17