Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1278684fc69774…

MALICIOUS

PDF

86.1 KB Created: 2021-07-06 22:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ef366a454cf8b7f35264312d8c079fc1 SHA-1: f4e824aeda9235bfb794fe534ffa4f35fc5ca0ca SHA-256: 9f1278684fc69774a0d1096d32dfc91ec762104298ff668a7e8d5c2e439713f2
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The file also exhibits characteristics of a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing lure or a downloader for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b038bebac---razigirevokafafa.pdf In PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/a44ec0801ce87add815f39b9db4460b6/46368674863.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/xapolexazegabudadalet.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/002b46bc057bde8d5a5b8acc2a725d8a/31382283678.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095bc1827c6e---34117158961.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/pijafapipan.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/c9fc75250b262cac5b3af835519a1479/8305676312.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608590c56983b---peneloxedizineti.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/fasuguj.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/55665889179.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/l9ufdk6m94flforf42o2p92csg/1840814534.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/a77c9e256b8bb012a5357ebb820c5459/38421976530.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/xigodanunusuvenitavo.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd25384d9c---fitanimitesevavowifokawa.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/20705472531.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081db9e14f0b---pegowavoliwigemifirene.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/3sbdnj1g58iojo4r3f350ctjig/xepapaxusuzapamali.pdfIn PDF document text
    • http://jeansresource.com/js/ckfinder/userfiles/files/69709022209.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608339072d39d---31469944616.pdfIn PDF document text
    • http://cnokorea.com/userfiles/file/41584242041.pdfIn PDF document text
    • http://thuexedanang247.com/uploads/image/files/gerekinetafi.pdfIn PDF document text
    • https://studio-september.com/wp-content/plugins/super-forms/uploads/php/files/bf80b73f9fb5a8e9ae41fb83debb69f2/murizu.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/ch9k00i2jgoqdl2g9qr8gj8pqe/xedasizalolofutox.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086389ca1521---28574699329.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/s66jupu6f2n8du2t0nsdo64id0/nememivivoxijopitamabu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=a+solution+has+poh+equal+to+13+at+298+k+the+solution+will+bePDF 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_off0000cfc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC0 17976 bytes
SHA-256: 81594b8dc0d0dc341649a09ad9bdd64016eb168f8b583e3eb34a6f5303fb5d99
font_01_sfnt_off0000fefd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFD 11512 bytes
SHA-256: cdedd0f1334aa056d984454bf8c1ca7eb47acbec177e191558b6c4ef89dd4101
font_02_sfnt_off00011a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A28 16252 bytes
SHA-256: bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4
font_03_sfnt_off00013008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13008 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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