Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea48a05f2ee0a1d7…

MALICIOUS

PDF

99.6 KB Created: 2021-06-28 04:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1bf35c8fab0f30009d74a08afe302bd3 SHA-1: 77accaf0494d00bca68693f79cc44197c599c92d SHA-256: ea48a05f2ee0a1d7a9e7f483fa4dc81a34908e1c7ed27b8aba4cf0b214fd6753
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://huntic.ru/uplcv?utm_term=easy+simple+expressionism PDF link annotation
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/3jasq931od2fh3glhcsqslutr5/tawibejisugeniripogebuj.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/cia9ctdrdu0e26m3i57lbd56v1/jononusujepeviwudi.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/6ghvrjle5ttqdk7s5ujtf9msah/xeniruzubadukodutokufovu.pdfIn PDF document text
    • http://rainbowcaterers.in/userfiles/file/21390240249.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7c787c0fbe---womunixi.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/7fvrh1cqqi0dkb48ns63thejb6/gujoxuriwudelukami.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea501eb385---salipaxilokexejewux.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/95980339084.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/5l6ong8m9uejp600tjun5kv67q/jazodoju.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb7dc669d---bozopafituza.pdfIn PDF document text
    • http://dijladentalcenter-qa.com/userfiles/file/zusekerizi.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/7f9f3ba4e6da0fef963765c8cf32f977/74643177938.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16075e7710f97e---nilorefijajobobo.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/nifonota.pdfIn PDF document text
    • http://rayzerfamilyreunion.com/clients/0/08/08e2d5bcffca37c2e1a82d364f4296c6/File/karenazojalisapasusogixef.pdfIn PDF document text
    • https://htddienstverlening.nl/userfiles/file/66447965483.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/9jir9adomb2aoeclqu1r4dppa4/97621482693.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160910d9265094---64245340881.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/f458d1dff9e037eb93adaeb627dedd12/fumolo.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0711d61de---86907074864.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/jbqt43rh0h3c286elov1170ftt/17061213451.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/02f52d86cf887935aa4e48ed7606248b/63281361576.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/5cfb1d660d8a9c8c826fdd58f4031ecc/ruvaxekazejepajevoduk.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/62530270435.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab97df34832---jupifojigijawogemapupov.pdfIn PDF document text
    • 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_off00012550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12550 10512 bytes
SHA-256: e35e8e3d598428e0bd0a2dba8176f2fc054eadf9844aff852dcdfaddc7d03cab
font_01_sfnt_off00013d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D2C 17276 bytes
SHA-256: 2566d570c0f109442875fae388b579c2a6c3aa4d2e387aa9dee5934bb4de2fad
font_02_sfnt_off000168f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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