Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc1fb57ff833f28…

MALICIOUS

PDF

350.0 KB Created: 2022-04-01 02:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 10369539f40199a12acc79de766ce110 SHA-1: 05ee806ab2f0e88fca1dbc5880a956b3d0351cef SHA-256: 3bc1fb57ff833f282604a5894f40fca215175979149a07ebe79166bfa327dab5
284 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6782

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://wirut.co.za/XSRYdR1H?utm_term=100+commission+real+estate+tampa PDF link annotation
    • http://kydceramics.com/upload/userfiles/files/14106433359.pdfIn PDF document text
    • https://attackworkoutprogram.com/app/webroot/files/ckfinder/userfiles/files/jogasijifejovaj.pdfIn PDF document text
    • https://psicologopsicoterapeutaemdrtorino.it/uploads/file/nupafalugisiw.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/68807600368.pdfIn PDF document text
    • https://wituxilozixataw.weebly.com/uploads/1/3/5/3/135317309/mebitod-lumuxamol-nubola.pdfIn PDF document text
    • https://www.webursitet.ru/kcfinder/upload/files/65012053850.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/42813044123.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20220315111001_pu8po7.pdfIn PDF document text
    • https://xuzopodoker.weebly.com/uploads/1/3/0/7/130738955/5381824.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/56013886816.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1645080535.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/bafomog.pdfIn PDF document text
    • https://iohrp.org/f_files/files/81858286840.pdfIn PDF document text
    • https://investkwik.com/userfiles/file/wosipefiz.pdfIn PDF document text
    • http://saraco.kz/public/uploads/files/36484045818.pdfIn PDF document text
    • http://ciccioinpentola.com/userfiles/files/76837605648.pdfIn PDF document text
    • https://wawotisusuwo.weebly.com/uploads/1/3/2/7/132741293/fatibudabeg-xawozisoduxivo-pufimijivaju.pdfIn PDF document text
    • http://domingo.hu/ckfinder/userfiles/files/89430492993.pdfIn PDF document text
    • https://gagasanriau.com/a450d92cb6be01b3b3669c18bfca7901/kcfinder/upload/files/kexib.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/difivoxatab.pdfIn PDF document text
    • http://weldingplaza.com/files/file/21677718896.pdfIn PDF document text
    • https://www.sdhbd.org/backend/web/kcfinder/upload/files/54722880613.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/xewinaxuzo.pdfIn PDF document text
    • https://www.jornaloflorense.com.br/admin/ckeditor/kcfinder/upload/files/92543875358.pdfIn PDF document text
    • http://lsneotek.com/ckupload/files/gidewufuj.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1620eeca2d6056---kavebefufawufifimebe.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/93807274124.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/94916677085.pdfIn PDF document text
    • http://sicompk.com/survey/userfiles/files/40659152859.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/56737778058.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/58499e471156a5e9e89899029105d87b/medevoguzufelodizexamidil.pdfIn PDF document text
    • https://www.andreivieru.com/ckfinder/userfiles/files/vowekomonawisevavog.pdfIn PDF document text
    • https://vokesilito.weebly.com/uploads/1/3/4/4/134400786/dafubesus.pdfIn PDF document text
    • https://9ja-bet.com/userfiles/file/tulita.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_off00050457.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00050457.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50457 19536 bytes
SHA-256: 69a6cb976117cd044e01c24818e95f144cbbf81be1a781b2f06170376907371f
font_01_sfnt_off000537c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x537C6 10612 bytes
SHA-256: 0d1e628f1c73f4cd8ef7b006065cb78915aa5f9cd79a25fbc3543307ec22469d
font_02_sfnt_off00054ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1