Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eba7e376ee4a428…

MALICIOUS

PDF

70.0 KB Created: 2021-09-26 17:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0c35d41722c60204d63502f1cd78326e SHA-1: 75c5dbdab215a509186fa07fe7a09f88a5423ebb SHA-256: 2eba7e376ee4a428913ac55bf880e497c35c65579863821deaed30238a745317
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as an image-only document designed as a phishing lure, typical of a spearphishing attachment. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm used to obscure the final malicious destination. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://klick-tipp.at/ckfinder/userfiles/publics/files/39985480332.pdf In PDF document text
    • http://groupelamiri.com/uploads/FCK_files/file/42453375762.pdfIn PDF document text
    • http://tries.cz/media/images/upload/file/28617968567.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/18021572039.pdfIn PDF document text
    • http://jucal.es/images/file/lorupopola.pdfIn PDF document text
    • http://montpellier-business-plan.eu/mbp/upload/images/images/upload/ckfinder/84550851543.pdfIn PDF document text
    • http://alpes-de-haute-provence.proximeo.com/ckfinder/userfiles/files/mavofivipijajowanesupo.pdfIn PDF document text
    • https://lux-ride.com/home/u4-6pzgszajsb5u/www/lux-ride.com/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/40736925061.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/67663525003.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/1133985243.pdfIn PDF document text
    • https://mikludava.lt/images/files/tojuz.pdfIn PDF document text
    • http://gardenofsound.com/userfiles/files/78185780032.pdfIn PDF document text
    • https://chambres-lannion.fr/userfiles/file/lugubobuloworisak.pdfIn PDF document text
    • http://rongqichem.com/upload/files/nefitujeka.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/liluzasilovubujimolowerad.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/34845147687.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/13286063227.pdfIn PDF document text
    • http://www.otevrenysklep.cz/ckfinder/userfiles/files/pikigifesal.pdfIn PDF document text
    • https://bankubezpieczen.pl/userfiles/file/jofivonuwudizagixifusa.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/xujiguweru.pdfIn PDF document text
    • http://cobe-ing.it/userfiles/files/82623098914.pdfIn PDF document text
    • https://techinnsrl.com/writable/public/userfiles/file/kazigo.pdfIn PDF document text
    • http://www.andreapondika.cz/file/74297519952.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161499528aaa23---pekesemi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=salaam+namaste+full+movie+download+mp4+filmywapPDF 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_off0000b196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB196 11080 bytes
SHA-256: 7227e218f6eaf4605fab40f75ce7c741843e99133d4c4691c30d781196770aa1
font_01_sfnt_off0000cb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE391 14444 bytes
SHA-256: 6037bbed1d8bc3476743fc950651cf194f2d1a465259481972ac4bf028ea314d