Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad097f6a853738e7…

MALICIOUS

PDF

84.0 KB Created: 2021-09-12 10:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e75190bc616cebef99773301a2f6bfcf SHA-1: 2fd3f4b64862c514540a99433d109acb3d23667b SHA-256: ad097f6a853738e739c0db177aff88d9f696f65974e0eb0afc856732b2467330
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to potentially compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 http://bjerkelunden.org/content/files/userfiles/file///wivomurowe.pdf In PDF document text
    • http://birzebbugastpetersfc.com/files/file/wijelenipusesiwede.pdfIn PDF document text
    • http://kangshi-you.com/uploads/files/202109090004218791.pdfIn PDF document text
    • http://abcbyspu.com/ckfinder/images_store/files/pegoxegonajiviwo.pdfIn PDF document text
    • http://commune-bourre.com/userfiles/file/53203518013.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/lufipinimovunoza.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161373841c2bca---gebuvelurubumexetu.pdfIn PDF document text
    • https://hoanghaie.com/Images_upload/files/kugosabol.pdfIn PDF document text
    • http://nct-vn.com/userfiles/file/5800810388.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/lupukozugavurosefadiz.pdfIn PDF document text
    • https://rjpexport.com/files/sebusotizek.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136687c149b5---fitojejunebawarol.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/87a30c16782b153e1ab02918852ceb29/nifirulisanipedu.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/rimewofi.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109061605092370.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/42871309801.pdfIn PDF document text
    • http://casavacanzesanvito.eu/userfiles/files/mevituxiweregigezeximi.pdfIn PDF document text
    • http://iscyber.com/userfiles/files/50904521573.pdfIn PDF document text
    • http://nyitotthaz.hu/userfiles/files/dufidufi.pdfIn PDF document text
    • http://webmba.fr/client/logo/file/93589453243.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136db20b0771---jamifowepusuvajazedosatoz.pdfIn PDF document text
    • https://volnynaklad.cz/data/file/bakopukokevepujixe.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/2964985338.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/pasobipibomawitisatarer.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=the+conjuring+3+stream+onlinePDF 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_off0000dec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC8 11040 bytes
SHA-256: 7dc4a0bd51be25ea66e58013e28ba614ed123e37b41b1621ce943f838bc28e09
font_01_sfnt_off0000f84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84A 19052 bytes
SHA-256: 3d50bd47314e8d767735f7b9a7a1cc1665faf52862c898d37ea9ace677b37b51
font_02_sfnt_off00012a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A16 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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