Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3157d612305c62…

MALICIOUS

PDF

281.8 KB Created: 2022-03-27 20:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: f768f3ec3c93c800967330930c93617e SHA-1: 5b5578fe8e66568222a92faf96a8188145ac11ec SHA-256: 4e3157d612305c62d50ab3d2fffad3e4428da83207c00b3122236e90287a499d
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7653

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
  • PHP webshell / backdoor source critical WEBSHELL_PHP
    The file contains PHP server-side code with the signature of a webshell/backdoor (named PHP webshell banner (madspot)). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
  • 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.
  • 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://lovig.co.za/XSRYdR1H?utm_term=moog+model+15+app+manual PDF link annotation
    • https://speedwayinfo.hu/uploads/file/kuzobinabavamo.pdfIn PDF document text
    • http://ildong.org/sa_upload/userfiles/file/20220310171118.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1622b30dddb93e---69202181888.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/kimurewomurulunir.pdfIn PDF document text
    • http://atad.ae/emanager/assets/ckeditor/plugins/kcfinder/upload/files/16080487715.pdfIn PDF document text
    • http://lrpharmaceutical.com/upload/files/67852102681.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622be78d9c5e4---73463834882.pdfIn PDF document text
    • http://0048.pl/48files/file/nabotus.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/lalezisonukugejosexozazoz.pdfIn PDF document text
    • https://tahubunting1.com/contents/files/2271481848.pdfIn PDF document text
    • http://cgpreceptor.com/ckfinder/userfiles/files/8651168012.pdfIn PDF document text
    • http://thailaundry.com/imgUpload/files/14804916094.pdfIn PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/97134015419.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16217e4bbd342e---waluwemalobowodad.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/pidn9p0v0o8vga3inpa50f76gn/47462284719.pdfIn PDF document text
    • https://exam12.menapoint.com/app/webroot/upload/files/ponozokubo.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/mkkg63jernclgc7piqu5bqgis3/femuwoza.pdfIn PDF document text
    • http://exim5.hu/_user/file/45212936327.pdfIn PDF document text
    • https://campestrechihuahua.com.mx/kcfinder/upload/files/55606534388.pdfIn PDF document text
    • https://dampinggame.com/calisma2/files/uploads/gopojuzoberut.pdfIn PDF document text
    • http://optometrystaprzemysl.pl/userfiles/file/jejesotakugekowexes.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/87793323828.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_off0003f17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F17C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004089c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4089C 10556 bytes
SHA-256: ea808b1cf32a1822e3c3602e10460dda6e3e087db39678cb244278cfdaf662ca
font_02_sfnt_off00042080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42080 21496 bytes
SHA-256: cedd90a8edb028eb4a8c1e1a6308eeaf6669b22d37d23d347ee2b87debb0de1b