Malicious PDF — malware analysis report

Static analysis result for SHA-256 87550b8f063dccb7…

MALICIOUS

PDF

262.7 KB Created: 2022-03-26 10:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: a8ee59ed951dd2d1d46f932551e3bcfa SHA-1: 599ffc37625f8533092fe5a1df82de47b039db4b SHA-256: 87550b8f063dccb7feae760b53b29e6f817f924ff83ad6e196a0c91e803abc48
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6853

Heuristics 6

  • 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.
  • 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 http://huucodatlanh.com/userfiles/file/43810253514.pdf In PDF document text
    • http://defendo.hu/admin/kcfinder/upload/files/zujikuwad.pdfIn PDF document text
    • http://scsytech.com/upload/files/jovomutew.pdfIn PDF document text
    • http://salsainkonstanz.de/media/files/22271257660.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/13273155533.pdfIn PDF document text
    • https://discovery99.com/userfiles/file/vopofipote.pdfIn PDF document text
    • http://cyklokomfort.cz/files/kcupload/files/76031834341.pdfIn PDF document text
    • http://holyfatwa.iq/admin/ckeditor/kcfinder/upload/files/88430736780.pdfIn PDF document text
    • http://toitureetfacade.fr/data/Files/76225509869.pdfIn PDF document text
    • http://bcf-plv.com/kcfinder/upload/files/meselib.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20220228_532509813AC1F46B.pdfIn PDF document text
    • http://balony.dmuchance.eu/userfiles/file/5779910927.pdfIn PDF document text
    • http://www.kermaz.fr/js/kcfinder/upload/files/27490525485.pdfIn PDF document text
    • https://bdayal.com/userfiles/file/94037884713.pdfIn PDF document text
    • http://aleksey-mihalchik.ru/upload/files/34555736037.pdfIn PDF document text
    • https://nesselaarbestratingen.nl/plaatjes/file/87777893221.pdfIn PDF document text
    • http://metalzilembo.it/userfiles/files/4129843485.pdfIn PDF document text
    • http://31kouqiang.com/userfiles/file/1647256530.pdfIn PDF document text
    • http://eg-connect.com/uploads/editorfiles/file///25627001362.pdfIn PDF document text
    • http://www.dgtrans.co.th/login/ckfinder/userfiles/files/15445791323.pdfIn PDF document text
    • http://bodybybodyology.com/ckfinder/userfiles/files/61830005930.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/6d1392e6f635d82ef4a9232f0ae744de/pomakaw.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/ad0aef1214177266d87d179957ba389f/82653931503.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620930d6e62ff---dexusekikig.pdfIn PDF document text
    • http://muralsdecoracio.com/ckeditor/kcfinder/upload/files/konokadiwigugitajawivat.pdfIn PDF document text
    • http://khocabien.com/uploads/files/dibidoveturabamus.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/kotul.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/pavosonajexoxebizozuke.pdfIn PDF document text
    • http://wittymall.com/multimedia/userfiles/file/zogadilivisavikaximuraku.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/fagoluguno.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/60386538161.pdfIn PDF document text
    • http://capital96.com/userfiles/file/21370490745.pdfIn PDF document text
    • https://www.swiftcargo.com/adminlogin/kcfinder/upload/files/damulagilagapigawevora.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=bws+battery+locationPDF link annotation
    • 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_off0003a948.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003a948.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003a948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A948 19008 bytes
SHA-256: 02309854056509122dfa8f217a4f812a5d72735fd7189c9f17f000ca411eec28
font_01_sfnt_off0003db56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DB56 10616 bytes
SHA-256: ba1a58a996189bebe0f136a49485f60c42a3e9d4fa993fcb3adf71756da04547
font_02_sfnt_off0003f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F3E3 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9