Malicious PDF — malware analysis report

Static analysis result for SHA-256 258a87f0a5ff2f82…

MALICIOUS

PDF

252.9 KB Created: 2022-03-02 00:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: f5ba7097e3189fc902c19b7f77a085b4 SHA-1: f49ff2e689ea99bd56739c91cca0377c401e5cb4 SHA-256: 258a87f0a5ff2f824be1256a53a35e0d90d73af9ffe870a472f263a036f53fc7
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6774

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://mifuj.co.za/XSRYdR1H?utm_term=tamil+songs+2019+ringtone PDF link annotation
    • https://gsacademy.ge/uploads/files/54546493711.pdfIn PDF document text
    • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/witebanojozawikebafelad.pdfIn PDF document text
    • https://w170001.boss588.net/upfile/files/20220216173431.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/162160d8e589d7---dojigunewifojunumapawu.pdfIn PDF document text
    • http://studiogallerani.it/userfiles/files/40311084640.pdfIn PDF document text
    • http://xn--b1adrijbbb.xn--p1ai/upload_picture/lazopavujozod.pdfIn PDF document text
    • https://topas-septiki.com/media-temp/img/uploads/files/befopefuxekanoru.pdfIn PDF document text
    • https://aravalivssamiti.org/admin/assets/ckeditor/kcfinder/upload/files/16865620661.pdfIn PDF document text
    • https://mro.hockeymro.ca/docs/file/72627532742.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161fb2a1787ab2---pulovapobejipuzuvimuz.pdfIn PDF document text
    • https://weddingitaly.jp/images/file/78666379670.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/43889729836.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/18325447078.pdfIn PDF document text
    • http://mweb.cz/images/file/91255809286.pdfIn PDF document text
    • https://elearnhouse.com/userfiles/file/kemotikafakosomusirimu.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16205f21c1e5b2---55162779656.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/57818827058.pdfIn PDF document text
    • http://tufaghanafc.com/js/ckfinder/userfiles/files/48280583580.pdfIn PDF document text
    • http://ssaisarang.com/ckfinder/userfiles/files/fukixozupadilepixutafizo.pdfIn PDF document text
    • https://seerupit.dk/assens/file/bojopajama.pdfIn PDF document text
    • http://xn--9w3b11kh5l.com/ckupload/files/27840834879.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/40830159359.pdfIn PDF document text
    • http://giaphatmed.com/upload/file/votaladegurufuzitip.pdfIn PDF document text
    • http://alacarte-grafik.de/userfiles/file/lijotavupidemojotinuf.pdfIn PDF document text
    • http://amtautotrasporti.com/ckeditor/kcfinder/upload/files/sunakabegove.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_off00036b8a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00036b8a.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36B8A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000382aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x382AA 10876 bytes
SHA-256: 01ab9eb0889c5592bf9821f4b6e7a4d02c6e0d4f171f13c4efa50f9f62113e99
font_02_sfnt_off00039bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39BD7 16160 bytes
SHA-256: 4ac500d6e3c0ff81b9d7bba6b662cc1b6c57f4f8b05facc13edcda647588841f
font_03_sfnt_off0003b14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B14B 19824 bytes
SHA-256: a4d46576bb24338edf5f02736e4faa40c76637706b10896f3d35f18e83af2a2d