Malicious PDF — malware analysis report

Static analysis result for SHA-256 552bc3efbbcf2264…

MALICIOUS

PDF

265.2 KB Created: 2022-03-19 12:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 36f5e4b6cd16e69cf2cbef9e63ace721 SHA-1: f6eb32768036cb7f915321ff0317a1cabc49e742 SHA-256: 552bc3efbbcf2264cb2f64489c3662ef63a1f8b878d73486c234fe696a19843a
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=libreoffice+spreadsheet+format PDF link annotation
    • https://parokaonline.hu/upload/files/53627208697.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/27052976459.pdfIn PDF document text
    • http://bc-nosingtasting.com/bestanden/files/96340225672.pdfIn PDF document text
    • http://ministerium.pt/files/68325899030.pdfIn PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/virad.pdfIn PDF document text
    • https://braus.uz/images/shared/file/2653004984.pdfIn PDF document text
    • http://energywork.pl/userfiles/file/83365732729.pdfIn PDF document text
    • http://healthmindsacademy.com/admin/ckeditor/kcfinder/upload/files/zanebono.pdfIn PDF document text
    • https://www.gpe-el.pro/ckfinder/userfiles/files/mowetok.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ffd2a43fe89---gisifavilidewaz.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/22949852158.pdfIn PDF document text
    • http://barefoot.pl/userfiles/file/65756895897.pdfIn PDF document text
    • http://myslizdrave.com/soubory/64083865753.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/67465847757.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/ajagofod.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/287882087.pdfIn PDF document text
    • http://ambulatorioveterinariovianello.eu/userfiles/files/didedumuxawaw.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/42861386024.pdfIn PDF document text
    • http://ipayon.com/root/FCKeditor/file/raxalavitexoligopuxunofol.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/senirawigofivudibus.pdfIn PDF document text
    • http://quinta.cl/upload/files/97371865977.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/a1b56b9bbce6dc1685e3be4498974cf9/55915744090.pdfIn PDF document text
    • https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/towalamimevelijimitizeka.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/demurejusenovulovokedena.pdfIn PDF document text
    • https://xyoaa.org/sites/default/files/files/78130806155.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_off0003b59b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003b59b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003b59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B59B 18448 bytes
SHA-256: 2f964257f4b25712ba176754ee8c5f2703f5babe315080c147ab0bb94721e330
font_01_sfnt_off0003e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E622 10832 bytes
SHA-256: 042ac8949ca2c688045425a22b253efd92e55d8e060c30e00ce22c701a7f6128
font_02_sfnt_off0003fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FEF2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9