Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2cf4d446f09377…

MALICIOUS

PDF

90.5 KB Created: 2021-09-04 10:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0f7129f28b7f53b0e7ecc9c0ea48ee5a SHA-1: 65682b275e69663e44a1cc67af7347ecc7695ff6 SHA-256: fc2cf4d446f09377cbf200f05b974500635678d264110378ae3bc5b7fff2dfcb
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097635fa7273---27512365370.pdf In PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/90cp05r8rgrt7aad3t582q8o94/sabelasusofutiranesedev.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160730aeb64fd4---99623704790.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/ia4flppo78rj960246uett56ik/75967927157.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5663efbbd---gaxamafenovozomaxufeja.pdfIn PDF document text
    • http://dent-pro.cz/pic/file/5054779439.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5c97a142d---96867159130.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/ddb26cba901d626bd94e8efd1133ab77/25767335623.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8c0eac9ae9---50409641954.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160dc1f499eff1---lokovaxa.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/batijolabajexetaxi.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/pirorepexe.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609b179156a47---32024464500.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/tonobagalawerenuraz.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce734ee9aba---jipogapapomowefokudifiko.pdfIn PDF document text
    • https://harom.ro/files/file/5963700814.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/45deeb3685e849eda2471fbf45f1fbbb/87873421753.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d5519b9e4---kejanojojibis.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/c8e7f98b89da465cea93fc91616dcb57/vetokefenabine.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/tobevivajoronovope.pdfIn PDF document text
    • https://xylemleads.com/userfiles/file/66077495764.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160db7545a630f---15660935251.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/93422118137.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=como+convertir+varios+archivos+jpg+en+un+solo+archivo+pdfPDF 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_off0000f8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F3 11396 bytes
SHA-256: 5a60a4c77fa5944d7bac886a6f5038d01f49f672e2a7c59c6f7056c97732dc76
font_01_sfnt_off00011364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11364 19148 bytes
SHA-256: 9392dacb183c892439a41e484649fc53cbdbb5fbe5fa61507bb244a84437d608
font_02_sfnt_off000143f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1