Malicious PDF — malware analysis report

Static analysis result for SHA-256 550b9c80dda995f3…

MALICIOUS

PDF

364.1 KB Created: 2022-04-01 10:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: c4a659b7084a2421498b68392f558931 SHA-1: 8764591013017309df0cbc5651b13264b93f629a SHA-256: 550b9c80dda995f3835782c3dd05a798008beba33736d8926001484c28d64d7d
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6543

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=competidores+de+coca+cola PDF link annotation
    • https://zoldlepes.hu/userfiles/file/47676922274.pdfIn PDF document text
    • https://icaiaa21.scrs.in/kcfinder/upload/files/60084047254.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/88b4d3d5d5968de3fd6efa8acc8c727c/70399045456.pdfIn PDF document text
    • http://studiogallerani.it/userfiles/files/92288109602.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe72a4150c1---beruzavusokinanosuda.pdfIn PDF document text
    • https://selilanabos.weebly.com/uploads/1/3/4/8/134875664/7629109.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/162355c00ec27a---ponefazoka.pdfIn PDF document text
    • https://www.scrs.in/kcfinder/upload/files/19392178024.pdfIn PDF document text
    • https://buxexuwuf.weebly.com/uploads/1/3/4/6/134660927/wurulatul_dufexebu_xurugoluzidasan.pdfIn PDF document text
    • http://parquesanalbertohurtado.cl/ckfinder/userfiles/files/kofutava.pdfIn PDF document text
    • http://bhavalaya.org/ckfinder/userfiles/files/vibisafizasot.pdfIn PDF document text
    • https://maharajganjtimes.com/assets/ckfinder/core/connector/php/uploads/files/xajaxaladirudik.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/serebifixelabodaviko.pdfIn PDF document text
    • https://balolemarivapi.weebly.com/uploads/1/3/5/3/135309218/1510764.pdfIn PDF document text
    • https://zippy-inc.com/app/webroot/userfiles/files/32841783149.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/162048d0ef2b56---45304594552.pdfIn PDF document text
    • http://cioccolatogallucci.it/userfiles/file/defisagawudotelolate.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/12988782288.pdfIn PDF document text
    • https://wanna-drive.nl/files/File/48252171154.pdfIn PDF document text
    • https://cylinder96.ru/admin/ckfinder/userfiles/files/15471013663.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623cee7372e2b---24976373860.pdfIn PDF document text
    • https://sportsfeats.com/app/webroot/js/kcfinder/upload/files/wamelidi.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/vomulixibidat.pdfIn PDF document text
    • https://houseofwax.eu/kcfinder/upload/files/rugiwi.pdfIn PDF document text
    • https://jovuximunises.weebly.com/uploads/1/3/0/8/130814448/nirugawer-paxapunesulune.pdfIn PDF document text
    • https://erdenet.mn/userfiles/file/bixidojimox.pdfIn PDF document text
    • https://zibozofos.weebly.com/uploads/1/3/4/8/134896422/e4062.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16224e57647de3---gafolaratowofax.pdfIn PDF document text
    • http://kwong-cheong.com/userfiles/jetano.pdfIn PDF document text
    • https://dogodanang.vn/uploads/image/files/92910590207.pdfIn PDF document text
    • https://inmaabiladi.com/userfiles/files/webiler.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_off00053d67.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00053d67.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D67 19836 bytes
SHA-256: 32cf573e792f6144502b4497379f6bf21d0c673fbfdc2578b806ee60ea3d4ce5
font_01_sfnt_off00057078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57078 10600 bytes
SHA-256: a95704feabdc828e12e1b55f2f5a165beddc8865f2f33f3117fddc112102b98e
font_02_sfnt_off000588b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x588B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1