Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bb070fadd0fb34…

MALICIOUS

PDF

218.4 KB Created: 2022-03-02 15:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 1f107d3fd02d1d46d623911d013bddb1 SHA-1: e3cabff00ee95bb6157ec555fbece023b05113ad SHA-256: a8bb070fadd0fb34fb939e40f947e303db34707e718f11914ced1d8bfc3b8053
251 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8293

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://cafij.co.za/XSRYdR1H?utm_term=acrobat+reader+8+full+version+free PDF link annotation
    • http://journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/22555430346.pdfIn PDF document text
    • https://we-plus.tw/ckfinder/userfiles/files/rikizosagugesur.pdfIn PDF document text
    • http://kovofilm.cz/userfiles/file/70715595128.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/jazasobubufepulo.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/kevokoliza.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/1550297ef3b40b8b19a508151c0e3040/ludevetelogixikusinid.pdfIn PDF document text
    • https://rpaxis.net/userfiles/file/livubowumirasesud.pdfIn PDF document text
    • https://mhreng.com/userfiles/file/sajuzebubufevasizidaganal.pdfIn PDF document text
    • http://xn--12ca5eb0atfbad4eh5ai1ef5bg6a8png.com/UserFiles/file/80119510214.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16207e69c27f18---koroba.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621615e012388---55449218597.pdfIn PDF document text
    • https://aspirecambodia-edu.org/userfiles/file/dorapodejixetawupo.pdfIn PDF document text
    • http://hotelrealerimini.it/userfiles/files/74300886514.pdfIn PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/pugafalivodezexuberor.pdfIn PDF document text
    • http://rediscover.today/databank/files/19547829974.pdfIn PDF document text
    • https://vgcanada.com/userfiles/file/23161257873.pdfIn PDF document text
    • http://cobweb.janci.net/upload/files/47797460075.pdfIn PDF document text
    • http://dijladentalcenter-qa.com/userfiles/file/12933660068.pdfIn PDF document text
    • http://cuuthuong115.com/ckeditor/kcfinder/upload/files/nogefenejebomoj.pdfIn PDF document text
    • http://www.css-jp.com/upfile/files/2022/02/18/20837292117.pdfIn PDF document text
    • http://supair-lux.hu/ckfinder/userfiles/files/72804188115.pdfIn PDF document text
    • https://www.escolamacrobiotica.pt/backoffice/assets/js/kcfinder/upload/files/filurusozim.pdfIn PDF document text
    • http://weforyou.it/userfiles/files/40340295554.pdfIn PDF document text
    • https://sinarlangit1.com/contents/files/tuved.pdfIn PDF document text
    • http://inimtrento.it/userfiles/files/kunopedutizagoxu.pdfIn PDF document text
    • http://spasm-sympo.org/uploads/ck/admin/files/55818143069.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/1475127432.pdfIn PDF document text
    • http://www.medic-pneumolog.ro/fisiere/file/982705356.pdfIn PDF document text
    • http://dolonchem.com/upload/files/sagikitabagokokezelo.pdfIn PDF document text
    • https://arte-salon.ru/upload_picture/lororikabuzaremu.pdfIn PDF document text
    • http://thessalonikiflights.com/files/files/xaravo.pdfIn PDF document text
    • http://hudebninastrojedrastik.cz/js/kcfinder/upload/files/24129503219.pdfIn PDF document text
    • http://linza-market.ru/upload/files/gakaroxawanesajaloti.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/49824144181.pdfIn PDF document text
    • http://thailaundry.com/imgUpload/files/sopotodofewozuzuk.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_off0002f911.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002f911.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F911 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00031031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31031 10964 bytes
SHA-256: 2836b1b67b58c120fb1bbfa15028643da57cb45474fbfa3cf16aee7fd5cb465a
font_02_sfnt_off000329cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329CF 18708 bytes
SHA-256: d8b761fbc22ba1f0a999cb3110e92fb727a596ca125d804ff9b5358cd10ae134