Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453a5954141cfe8…

MALICIOUS

PDF

225.4 KB Created: 2022-01-23 04:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 120e628b5c1e41438d6c5745d3557436 SHA-1: 9d2f767c7906b6e62d8f1a209ceffe4264f604b2 SHA-256: 4453a5954141cfe87c4d839c15a74a5e525222021cb2cbc8d70fe5c5fa408d9b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The presence of multiple compromised CMS upload links and SEO redirector links suggests a phishing campaign aimed at users interested in financial trading platforms. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7036

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://huntic.ru/uplcv?utm_term=charles+schwab+trading+platform+uk PDF link annotation
    • http://mdfgiare.com/upload/files/sepofolew.pdfIn PDF document text
    • https://reflectionsseries.gilmorgenstern.com/userfiles/File/47234875963.pdfIn PDF document text
    • http://jamesandsons.ca/userfiles/file/12796445419.pdfIn PDF document text
    • https://mobilaide.com/upload/editor/file/58439370327.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/1568535195.pdfIn PDF document text
    • http://x-mobio.com/upload/files/mujumudakisom.pdfIn PDF document text
    • http://sd-bada.yupucx.com/upFile/file///ITX202112271836521932.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/pavagigufitomel.pdfIn PDF document text
    • http://galettedesrois.hu/userfiles/file/jofosujir.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/20940915671.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/7890757921.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d27317ca701---revirad.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/luvisirenigarijusezizup.pdfIn PDF document text
    • https://francois-daulte.com/ckfinder/userfiles/files/98200819949.pdfIn PDF document text
    • http://monarchiaerembolt.hu/tmp/vilali.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/8vophlfdj9n6bdnu1d9g0dnpah/28067584594.pdfIn PDF document text
    • http://ailin.kz/js/kcfinder/upload/files/13187953745.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/besaxudapusovetez.pdfIn PDF document text
    • https://renesens21.com/ressources/upload/files/1527723635.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/mijiwuzizujifolabotoge.pdfIn PDF document text
    • https://hearing-outlet.com/uploads/files/202109241553566365.pdfIn PDF document text
    • http://candientushinko.com/images/file/82353919513.pdfIn PDF document text
    • https://www.sterlingsez.com/ckfinder/userfiles/files/16806030061.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/n5b3596htjn329jhim78h0mv86/43095918294.pdfIn PDF document text
    • https://nrsa.tj/nrsa_system/ckeditor/kcfinder/upload/files/lugerip.pdfIn PDF document text
    • https://projetounificado.com/uploads/files/pajovizogipiwazogajen.pdfIn PDF document text
    • https://proxus.nl/file/tumusizekarezukufitoxuv.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614290c485a1a---sifukopobabur.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/lipirenibo.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16196cf8570ba2---gezefofonojosil.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/wojavadevig.pdfIn PDF document text
    • https://sanidom.pl/img/file/wewulawopezadolebu.pdfIn PDF document text
    • http://jumpstart.mobi/userfiles/file/sibudoroxudufinex.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/2688324407.pdfIn PDF document text
    • https://eqonetech.com/upload/userfiles/files/68572611617.pdfIn PDF document text
    • http://bebsulmare.com/userfiles/files/gapapotutu.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_off0003178c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3178C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00032e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E2B 16956 bytes
SHA-256: 0e1950c8a5fd71bfa66b0230219121c8dec20711c74540d9b7e029fd3623e2d7
font_02_sfnt_off00035a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A78 11516 bytes
SHA-256: 73e95cf570549e400419fc2d1cb320d3a2b66f696ee9017a5d48ddc34cde7db0