Malicious PDF — malware analysis report

Static analysis result for SHA-256 42526291f467feb2…

MALICIOUS

PDF

111.0 KB Created: 2021-08-25 00:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 2d0a7e316076c9f5f70904e2b8fa85af SHA-1: 53cdb020ef6afbeaa686bb3a1a89c8eff7b3edb2 SHA-256: 42526291f467feb2cd5096db24d6466ec159c1d367f488744b6a636d8aa6f1b8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9477

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://sns-russia.ru/userfiles/file/39513305760.pdf In PDF document text
    • http://artdental.hu/editor_up/sovegisufogijes.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/b2e7d41e32d28ac9a7d69f27b171e4e4/rufukagapexuno.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/41189968976.pdfIn PDF document text
    • https://takipcisec.com/calisma2/files/uploads/43124729062.pdfIn PDF document text
    • http://www.sanjuktabanerjee.com/fckimages/file/79862526068.pdfIn PDF document text
    • https://mygenius.ru/admin/ckfinder/userfiles/files/pafexogajodilirukuboten.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/61762018489.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/8pju7ausvtau8c0bg8h6vop3u1/53386647751.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b68e5d8130---nowifitoxewatunobisaraluv.pdfIn PDF document text
    • https://lwim-ouargla.dz/ar/files/72340114533.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/51377208337.pdfIn PDF document text
    • http://papaicountrylodge-longstay.com/user_img/files/97198858106.pdfIn PDF document text
    • http://gewald.ru/content/Files/lelojaketepaxo.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2e8248a9c---6274318382.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160f9bae3bcca8---92430450046.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/93884263359.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/c5b3c34490632007df7626a431dd1db0/94850855937.pdfIn PDF document text
    • https://hoatuoi360.vn/uploads/files/mefomuluzawujitojovafo.pdfIn PDF document text
    • http://www.espace-hotelier.com/ckfinder/userfiles/files/24707912408.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/3f832e9f1ce73617cb2bd63a4e0f83a5/26918430485.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ec7ed018ab76546691f103794065aa27/44926999511.pdfIn PDF document text
    • https://kluchar.net/klucharnet/images/file/10915506859.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/viraw.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/85057578444.pdfIn PDF document text
    • http://irpuyesh.com/cache/fck_files/file/nibosobevazukakoduvageset.pdfIn PDF document text
    • http://scoopsites.net/userfiles/file/nolule.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16099637ead506---malivatizanelope.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=intuitive+thought+meaningPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13470 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C82 18908 bytes
SHA-256: ce2c64871e429200685266461f717c8778babefe34fa6145c958545387274fbb
font_02_sfnt_off00017c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C8F 10360 bytes
SHA-256: 62e1f4e8aed85f3d90d1ddcccb968ca451a91927cfc3c3c7d9259fc8e6e259fe
font_03_sfnt_off000193c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193C6 16452 bytes
SHA-256: 935e080d2693d83bb4e3c510827c91c159065c387133752280b470824dfd2fa2