Malicious PDF — malware analysis report

Static analysis result for SHA-256 793c82df557e8c73…

MALICIOUS

PDF

94.4 KB Created: 2022-04-04 18:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 28d90939c52d4d2b053b79c651818faa SHA-1: f9aedd6b90f069025f3004a5d90aef1918180dd5 SHA-256: 793c82df557e8c73d2a2c0c7efc8ae1e286e485a9bf378d68a3a15638f5292f7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many of which point to compromised CMS upload directories or disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely involving the execution of JavaScript to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

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 https://yubit.co.za/XSRYdR1H?utm_term=identify+three+examples+of+bismarck%27s+use+of+realpolitik PDF link annotation
    • https://euhoca.com/js/ckfinder/userfiles/files/nonotev.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/5fb186394e78f1890f74935997ef917d/zaxevimomekedimojologe.pdfIn PDF document text
    • http://healthywithhart.com/res/file/48481773773.pdfIn PDF document text
    • http://vintagesilverrose.com/admin/ckeditor/kcfinder/upload/files/70289517490.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16246ec341192c---lizuves.pdfIn PDF document text
    • http://essential-people.com/USAID/file/78721137363.pdfIn PDF document text
    • https://nutrishop.in/ci/userfiles/files/sufojilo.pdfIn PDF document text
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/5745951.pdfIn PDF document text
    • http://shop-exclusive.cz/userfiles/file/najumanobomifu.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16228d6ec1db9b---80362523222.pdfIn PDF document text
    • https://eastoncn.housemember.com/uploads/files/vedin.pdfIn PDF document text
    • https://tubanepa.weebly.com/uploads/1/3/2/7/132740320/tumanivax.pdfIn PDF document text
    • http://canvangdientu.com/images/file/buvukilofes.pdfIn PDF document text
    • https://prograsifkalip.com/files/3481703157.pdfIn PDF document text
    • https://visorupa.weebly.com/uploads/1/3/5/3/135305290/5583822.pdfIn PDF document text
    • http://songchanraccomposite.com/upload/files/7845304056.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/32350258304.pdfIn PDF document text
    • https://xewaxamuroz.weebly.com/uploads/1/3/4/5/134529724/8379692.pdfIn PDF document text
    • https://siemens-rozetki.ru/kcfinder/upload/files/84963365868.pdfIn PDF document text
    • http://youil.org/userData/board/file/julutewuzudubusasil.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/dikapiridusaloxupoki.pdfIn PDF document text
    • http://slipa.site/0429/upload/files/jonurofuniba.pdfIn PDF document text
    • https://logosomuzabi.weebly.com/uploads/1/3/0/9/130969340/zabopimagobozivis.pdfIn PDF document text
    • https://jikujumek.weebly.com/uploads/1/3/5/3/135318263/3049d21f321d2.pdfIn PDF document text
    • http://pribatu.persac.pe/images/files/jiwuvomunetidogubowituv.pdfIn PDF document text
    • http://alptw.com/images/files/48849597866.pdfIn PDF document text
    • http://thucphamchucnangmy.vn/uploads/files/wajujinefalebawegetazuda.pdfIn PDF document text
    • https://www.coltishallclinic.co.uk/dashboard/ckeditor/kcfinder/upload/files/jabofevediwimazunagaf.pdfIn PDF document text
    • http://petrduchek.com/files/vuxoxizufuxige.pdfIn PDF document text
    • https://linugotozoluj.weebly.com/uploads/1/3/4/6/134662393/ac50ce7933.pdfIn PDF document text
    • http://talesma.com/E/file/jipulinagenelowologudes.pdfIn PDF document text
    • http://xn--80aaab5bgii0ck.xn--p1ai/ckfinder/userfiles/files/97577979186.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_off00010422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10422 19516 bytes
SHA-256: d0db3c97d6f90a890330e8481d46d247002ee7e451a3e5da41391c0e1af4d7ce
font_01_sfnt_off0001379c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1379C 11420 bytes
SHA-256: 27342bdb30b37e7a0cd6f0e5c297cf86e56a36ba1914298fb3645d3e26864472
font_02_sfnt_off00015236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15236 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1