Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bc070b21c1b98c…

MALICIOUS

PDF

84.6 KB Created: 2021-10-24 08:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 8aca8c3ce9aaeb1bfe66d4de346e0bd6 SHA-1: d2c5bd1cc68d6ee89f10a1c1da373239e9391489 SHA-256: a8bc070b21c1b98c7064588c51226890876c4217b804cc5d2353f976754fa85a
241 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://ethnicminorities.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/42102184021.pdf In PDF document text
    • http://saringkarnwood.com/UserFiles/file/70879726478.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/wemef.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/dopixoxigi.pdfIn PDF document text
    • http://korean-school.hu/hangul/userfiles/file/vabagelixuvo.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/nafubixadedimiladipokow.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/50158448750.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/21209457281.pdfIn PDF document text
    • http://samnakthodrahassob.com/userfiles/file/zulez.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/36986217863.pdfIn PDF document text
    • http://expresskaliski.info/file/voguririmi.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/dizutezisawupawubejoji.pdfIn PDF document text
    • https://brawlcall.com/ckfinder/userfiles/files/bipixitetuletusikafefed.pdfIn PDF document text
    • http://vncanada.vn/uploads/files/xefodubepuzag.pdfIn PDF document text
    • https://alutat.com/data/file/31283981341.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/18912165500.pdfIn PDF document text
    • http://tuvantindat.com/uploads/2021-10-21/images/files/xevowixapusovilifaririn.pdfIn PDF document text
    • http://kezheng.net/Upload/file/xedileb.pdfIn PDF document text
    • https://onderhoudnlgarantie.nl/upload/file/daxuratiporudolovepu.pdfIn PDF document text
    • http://volamthienha.top/userfiles/file/81836566128.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/161502c1e105bb---zokisedupejadojesi.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/1tjvup7ksf81avckbtvcvadjb1/femogavuwusasebolawawado.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/purejorav.pdfIn PDF document text
    • http://gsmontaggi.it/userfiles/files/78050546228.pdfIn PDF document text
    • http://fantasymusic.it/userfiles/files/27242739219.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/161666d49a2132---60423426140.pdfIn PDF document text
    • https://krisoc.ru/uplcv?utm_term=yes+man+bloopersPDF 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_off0000e76d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e76d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76D 10344 bytes
SHA-256: 090014af27e11bbc3d4e7b44f84a586ff920936992e3a939b08a2c1598e44c5c
font_01_sfnt_off0000fe7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7F 17140 bytes
SHA-256: a62e3e872b68c17fcb7014d748474ffebceba9bf60d0de0c288fecd4bc3cde29
font_02_sfnt_off00012b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1