Malicious PDF — malware analysis report

Static analysis result for SHA-256 552c9caffcd68ea3…

MALICIOUS

PDF

210.6 KB Created: 2022-04-19 15:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 3a18728cf45545dc87d4764d3b436913 SHA-1: 15105ac15363a1778d710308d441c8b9b19dad5b SHA-256: 552c9caffcd68ea3ae87503622f254855a160a8e52c5ac5e2392d0a9d16ed1cc
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8404

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://sunuf.co.za/XSRYdR1H?utm_term=android+browser+application PDF link annotation
    • http://titadoorbinhduong.com/upload/files/36207629714.pdfIn PDF document text
    • https://adeptos.clevercloud.pt/images/items/files/97289401826.pdfIn PDF document text
    • https://www.osazovanidps.eu/admin/kcfinder/upload/files/8202386921.pdfIn PDF document text
    • https://portalspam.media-informatika-mura.com/assets/kcfinder/upload/files/92703525758.pdfIn PDF document text
    • http://exima.kr/userData/board/file/doviwajezivid.pdfIn PDF document text
    • http://tadeaskotrba.com/plupload/img/0/files/20619644050.pdfIn PDF document text
    • http://pyramidplaster.com/file_media/file_image/file/74282595897.pdfIn PDF document text
    • https://trimix.bg/UserFiles/File/9474186648.pdfIn PDF document text
    • http://dgelc.com/userfiles/file/20220215144855.pdfIn PDF document text
    • https://rebeccaosborne.com/uploads/85944072274.pdfIn PDF document text
    • http://www.alm-machines.be/kcfinder/upload/files/89389336907.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/nejavotejojusawerototib.pdfIn PDF document text
    • http://chunmianxian.com/upfolder/e/files/20220417153459.pdfIn PDF document text
    • https://topas-rus.ru/media-temp/img/uploads/files/51912955499.pdfIn PDF document text
    • http://durakgiyim.com/uploads/icerikler/files/11698223000.pdfIn PDF document text
    • https://norservis.com/files/files/57014339485.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/vasusisuga.pdfIn PDF document text
    • http://www.elmundodelapiscina.com/ckfinder/userfiles/files/56451477026.pdfIn PDF document text
    • http://mvpvo.ru/userfiles/file/soxepopamuvefij.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16241d95c0bb7c---losorefifesilepoduvobi.pdfIn PDF document text
    • http://internet-trade.cz/UserFiles/file/xomasatefafasewetuwavara.pdfIn PDF document text
    • http://najlepsietorty.sk/uploads/fck/file/47930449258.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/r8tb1os98bd4pehfbo7dc2ffl5/zepalede.pdfIn PDF document text
    • http://xn--elementy-zczne-kwb98g.pl/media/file/66439788894.pdfIn PDF document text
    • http://hmconcretemixingplant.ru/d/files/55208970876.pdfIn PDF document text
    • https://samsungklimamodelleri.com/upload/ckfinder/files/mibedivuwedik.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 extracted file (font_00_sfnt_off0002dcb9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002dcb9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002dcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCB9 17868 bytes
SHA-256: d4b807782523e9daa3e59c575cf674dfdb224c9ed596c105f7e86e75e8687d66
font_01_sfnt_off00030b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B40 10712 bytes
SHA-256: e70132d165dbe5e5a39d1cea2f7ce4f5bfcd74ffa4f16b435e9c7bd351f29660
font_02_sfnt_off000323d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1