Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef76c1e606ace02…

MALICIOUS

PDF

91.7 KB Created: 2021-06-29 04:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e7e7ec1b783027697c93a73714089da5 SHA-1: c7f3df06b341871757aa2cfcadbf45ffd172587b SHA-256: 0ef76c1e606ace0210546b297f437b26d21d0e5ee4af30d8f5d5be72da9475c7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting, likely intended to lure users into clicking malicious links. The PDF structure itself is also noted for containing duplicate objects and being generated by wkhtmltopdf, suggesting it's not a typical user-created document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://royalgoodviewresort.com/Uploads/file/velakisifewonixanoxu.pdf In PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/n55etmr2mgnhrg7vpsm3ht6145/22349913690.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b481ea3325---gojekidonit.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b99b95968---46368225112.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20210529000027177.pdfIn PDF document text
    • http://maihome.hu/admin1/file/5389277187.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/350qgl09airmnugmlgup27vnl0/bafetugurikumaxi.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/wadewilewizenilirodokib.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/f5237b6eddfb99a4896877f8e3a078e3/48095419102.pdfIn PDF document text
    • https://globalquestconsulting.com/userfiles/files/91068466133.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baf5e5c4bd6---nuxuxu.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/82752651580.pdfIn PDF document text
    • http://www.bash.cl/media/file/pudawid.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/xawowuninunoreve.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a49591bd84b---29617262324.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/fb24bd4c9722e69dd0986e0ea4c328b0/semejiro.pdfIn PDF document text
    • https://henklinders.nl/henklinders/upload/files/49950570257.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/m4b863un2b5ca83r72as1uo51g/fodat.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/61223549619.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c0065bf6c---19957651058.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+long+is+8+weeks+pregnant+in+monthsPDF 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
stream_005_off000144d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x144D5 18128 bytes
SHA-256: 148d48af92d2584f7a72ad706f9f85e8b0d9379501248c5462bf8f48572e8bef
font_00_sfnt_off0000e83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83D 16600 bytes
SHA-256: ecd1c1c45727fa0b64a67b337a76a29d4ec5f73baa84709bb8cbbf486ce12dfd
font_01_sfnt_off00011316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11316 11076 bytes
SHA-256: 67550c00e538cb864b6e48c28209894bd3b1d82b5d37454a132f4b3bfa245ea5
font_02_sfnt_off00012cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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