Malicious PDF — malware analysis report

Static analysis result for SHA-256 096c366663f59821…

MALICIOUS

PDF

69.0 KB Created: 2021-10-01 10:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: a053cd272e4decf2c82b0691505bfbd9 SHA-1: c0f77d8a83c30ba5e2e804053817ba1284a58db8 SHA-256: 096c366663f598216497bb2f826e8d0d83fcc1faa6e73d7457148a29f65037c2
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing numerous links to external, potentially disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting.

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 https://megalightgroup.lv/uploads/files/62418595888.pdf In PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/73062324834.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/ragetuja.pdfIn PDF document text
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/7881339890.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/kuzitiru.pdfIn PDF document text
    • http://friulanamarmi.it/images/file/99088723862.pdfIn PDF document text
    • http://yogasol.cz/ckfinder/userfiles/files/nikotodozegafazazi.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/83661398331.pdfIn PDF document text
    • https://1000families.eu/userfiles/file/sawifat.pdfIn PDF document text
    • http://dtyxbpzx.com/filespath/files/20210914082701.pdfIn PDF document text
    • http://impressivetravelvietnam.com/upload/files/toboza.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/gevivusuzatukibowaj.pdfIn PDF document text
    • http://lejonhund.com/upload/99595460858.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/79572508205.pdfIn PDF document text
    • http://milkexim.ru/imgeditor/file/najabibuleri.pdfIn PDF document text
    • http://macro-e.com/app/webroot/userfiles/files/pisop.pdfIn PDF document text
    • https://zbmbudomont.pl/userfiles/file/govewifumenikute.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/palemoluroxovoraw.pdfIn PDF document text
    • http://tzoetemondje.be/uploads/files/95189271803.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/jodukajevoxabeviturigo.pdfIn PDF document text
    • http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23177085975.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/f12c798b8b44e2ee5085f7a253e4ce97/korofazidonikidewafifadol.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/muwivaninegoviremugedefub.pdfIn PDF document text
    • http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/27113826673.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=netflix+remote+control+app+androidPDF 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_off0000b1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A4 14472 bytes
SHA-256: 22d84bb7e25e0ba418a86c926ce2b11d900ad00d9114e247fa77156f71122cbf
font_01_sfnt_off0000d5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A0 10692 bytes
SHA-256: db1ca3c1ff1b2da0088a1fa44c9c1b1b7f3122a38875d3c27b5db8c64198836c
font_02_sfnt_off0000ee1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1