Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd47c6f61f73a30b…

MALICIOUS

PDF

72.3 KB Created: 2021-10-01 11:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 296fcc0ef9861a1cb701fc54eab0e3ec SHA-1: 8f339f5c7c9c8dc62d1acb50dd795094e14bc3bf SHA-256: fd47c6f61f73a30b76aa4c12b1c9a9022612bbf520350ad8f5f995ba424a7216
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that form a link farm, a common tactic for phishing and malware distribution. Several heuristics indicate these links point to compromised WordPress uploads and disposable hosting, suggesting an attempt to obscure the final malicious destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/uplcv?utm_term=python+os+get+env PDF link annotation
    • http://hcstonetw.com/uploads/files/202109221512308746.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/f764dae2b59b48a6a444639c7077e6a1/gifutewujejubasoramufep.pdfIn PDF document text
    • http://nocleginaplus.pl/uploads/userfiles/files/69649999387.pdfIn PDF document text
    • https://xebecdesign.com/xebec/userfiles/file/44934432810.pdfIn PDF document text
    • https://kidneystonetreatment.in/userfiles/files/raralawojeturuxis.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/5b0112a0f8b089d3dd9b14a3ed7bbdac/21624195987.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/0e90c54b8ace9a31986e48cf22881693/javowuvesepagak.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/xapefilejuvupanibusiwota.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/62389755816.pdfIn PDF document text
    • http://dsagco.com/Upload/file/7834991287.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3d91f398f---fezenasegemidewopotijekiz.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a0b2918ba---gorikag.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/76427658767.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161558719ea556---mudesilesekabarowobiri.pdfIn PDF document text
    • https://www.idd.no/ckfinder/userfiles/files/jukiwivugopivinova.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/segetowakelutapixebitaf.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/42927260916.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/875a6406319595bfd974731198ca8b78/89634966259.pdfIn PDF document text
    • http://matsusushionline.com/uploads/files/20905511561.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16142c559591c5---xaketefonekimebinezeveb.pdfIn PDF document text
    • http://dongamold.com/fckeditor/upload_files/file/dufagomalilejalugidofixok.pdfIn PDF document text
    • http://playoz.com/ckfinder/userfiles/files/jazewupi.pdfIn PDF document text
    • http://tingchucontrol.com/Uploadfiles/files/26322349538.pdfIn PDF document text
    • https://dulsuc.cl/userfiles/file/terejosajawixoz.pdfIn PDF document text
    • https://kimcert.org/E/file/55791858676.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/23180046174.pdfIn PDF document text
    • 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_off0000b653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB653 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6A 10168 bytes
SHA-256: 6f4f1d098b03d39f25c9a56a8c496b35102f244e4ec4a0722a6fb1a6b5f4ffb7
font_02_sfnt_off0000e532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE532 17952 bytes
SHA-256: 0fb500da4156945a53f549b550a06896c87dca43f2d2c9d68695e14ee7f9d433

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