Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d84ed6c085da1bc…

MALICIOUS

PDF

86.8 KB Created: 2021-09-05 17:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 61b4d6c875205081d87f28e8b4a6125f SHA-1: e79567ce0cb0fb965f0e243e60b87c9bf37db80f SHA-256: 5d84ed6c085da1bc7223b0fc69d59c2b6088ad8ffc7a4eb92effc48d0b467b0e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://stefanourso.com/public/userfiles/file/30871616653.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba7f98b997---kiketilojimokod.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/njn91jg3bk0a5fd6m7uq5mlgik/dodurirakubirosanumizatu.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a96571a35---79685076176.pdfIn PDF document text
    • https://markyatirim.com/resimler/files/gopaxejutoganinufesej.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/xexamafijurukaku.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/3bcq22so9j2sqbiou24kl3fe9t/43019738149.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11d760d592---21856432922.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16082043ccb074---febiro.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f5bd219e4---solomorezojojasexotewugo.pdfIn PDF document text
    • http://niszczeniewaw.pl/userfiles/file/zedajovapijifejibub.pdfIn PDF document text
    • https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/92167361921.pdfIn PDF document text
    • http://lafenicealcamo.it/userfiles/files/56321183267.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021826719108915.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/78190599944.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/66419997124.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/51882595755.pdfIn PDF document text
    • https://mbzl-pro.xyz/web/img/podborky/files/18442608670.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/28019784267.pdfIn PDF document text
    • https://medtek.vn/storage/file/jolatakidipo.pdfIn PDF document text
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/63153a79673df3ed9919925cf0dbdee1/galeked.pdfIn PDF document text
    • https://tadimtursu.com/image/files/tesuxivewinoxenutuloragus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=viewsonic+projector+pjd5555w+manualPDF 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_off0000e985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE985 11096 bytes
SHA-256: dfa86783935a0eba1592acd4abe0d2a2b7e060605e73384b8eafca14b13a2a69
font_01_sfnt_off00010373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10373 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B85 18456 bytes
SHA-256: 272aeb0719564300481a9c7871adcac0fb1b7c3a87e91d8badd19a957c1eb45d