Malicious PDF — malware analysis report

Static analysis result for SHA-256 44515f5f4a80aa25…

MALICIOUS

PDF

109.0 KB Created: 2022-03-07 00:06:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: b42824c1649b50cb296782a77995eeaa SHA-1: ec5efb11a4b39de813d8490b2c275a5a200b1e44 SHA-256: 44515f5f4a80aa25f7fbb016f7415d4da1d08297bd71878afdf3a60d394e7614
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery via these links. The embedded JavaScript is likely used to facilitate the redirection or obfuscate the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://loheb.co.za/XSRYdR1H?utm_term=forty+acres+scholars+program+supplemental+short+answers PDF link annotation
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161fdc17b0a049---21822970737.pdfIn PDF document text
    • http://pilot-market.ru/new/files/file/radebatififibuxizopuvunul.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/emrnr32ivhe8q0bau86m4t71kq/60174960130.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/sipitejunureliwugamal.pdfIn PDF document text
    • http://viaecommerce.com.br/kcfinder/upload/files/tetutofetufev.pdfIn PDF document text
    • https://gulceoyunlar.com/calisma2/files/uploads/62594954188.pdfIn PDF document text
    • http://cobmedia.hu/include/tijalatuvono.pdfIn PDF document text
    • http://greffe-cheveux-tunisie.fr/ckeditor/kcfinder/upload/files/fegebuwemedibivu.pdfIn PDF document text
    • http://antasboru.com/guvennet/resimlerfiles/50262232406.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1620d5cbc57636---12262141156.pdfIn PDF document text
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/xitobodirazo.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/32318305958.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/newomeduwamiga.pdfIn PDF document text
    • http://tsnpharma.com/upload/files/sifuse.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/39947305581.pdfIn PDF document text
    • https://afgventuregroup.com/cfiles/file/febusiren.pdfIn PDF document text
    • http://www.bennex.co.th/assets/kcfinder/upload/files/momajoxikemi.pdfIn PDF document text
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/mepoxopegoboborazepowebux.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d8a92deefc---pazutuwigakokiforu.pdfIn PDF document text
    • http://huabulaw.com/uploadpic/2022-2/file/2022020715552273499.pdfIn PDF document text
    • https://daotao.cungthieunhidanang.vn/app/webroot/upload/files/fenewudi.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/161faac1579ce4---dafelurigodonafelezusik.pdfIn PDF document text
    • http://htrp.ru/kcfinder/upload/files/gumaretubujukukezojowus.pdfIn PDF document text
    • http://kifei.ru/files/files/30789931157.pdfIn PDF document text
    • http://saintthomassolapur.org/admin/kcfinder/upload/files/36107451104.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/69154430947.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/novatofadefefizoworaloke.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/kazijububolokid.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/jasigakiribux.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/rugaridivipan.pdfIn PDF document text
    • http://eintracht-bayreuth.de/kcfinder/upload/files/65028498792.pdfIn PDF document text
    • https://www.kidilangues.fr/js/kcfinder/upload/files/nazajuzixiturilitixu.pdfIn PDF document text
    • http://jungam21.com/upfiles/file/1645423791.pdfIn PDF document text
    • http://personaleducador.com.br/ckeditor/kcfinder/upload/files/telozefenugebowawidebij.pdfIn PDF document text
    • http://tuecpa.com/file_media/file_image/file/norobesedi.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/bujusipirifalaku.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_off00013cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB3 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000153ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153CE 21136 bytes
SHA-256: 86a25124481e3276bdf066fb8f6a1627f058c507568558fe6e9db3be793273c8
font_02_sfnt_off00018b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B69 11004 bytes
SHA-256: b144c5051861422f76db4e08a5a2f40147eaa4ec63e2ccd4648a3918080d95e8