Malicious PDF — malware analysis report

Static analysis result for SHA-256 2847ae4c79402fc9…

MALICIOUS

PDF

75.5 KB Created: 2021-09-27 09:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-23
MD5: f0204e92bbd652e81041f8defeaea1e0 SHA-1: 9a3b0bf9e769c255933ea7dc39ca8934cc7bb7b5 SHA-256: 2847ae4c79402fc9dfa15ad3b4e09e0600b638684cd4d9654823e7ab93f7fb81
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/67dfdbb662d2c2aebd030fa260579dec/3894680398.pdf In PDF document text
    • https://fetogram.ir/images/upload/files/42300073541.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/edda6f97e617d471e57b0e38313a3cad/sedox.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/rugurakajizawipixane.pdfIn PDF document text
    • https://www.rosebankprimary.co.za/inc/ckfinder/userfiles/files/lixaminosonexozusigezejar.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/8a0e14fbbf9e5c944aca7335f5dd50a0/13515757075.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614161ffddcae---23635867240.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/58029345769.pdfIn PDF document text
    • http://3suntech.com/UploadFile/file/20210907175100478.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1614ceb7f176aa---widodiwiguwogojag.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/sunugitibalenutesogade.pdfIn PDF document text
    • http://magogaralbamoble.com/galeria/files/90936272111.pdfIn PDF document text
    • http://wxdyzs.com/userfiles/files/xumuluwebivowof.pdfIn PDF document text
    • https://hgindustrial.eu/userfiles/files/wusokigevoxev.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613da368d88a5---23703647175.pdfIn PDF document text
    • http://woodlandhills.ilovepokebar.com/uploads/files/73167831790.pdfIn PDF document text
    • http://vo23.ru/upload/file/98996735396.pdfIn PDF document text
    • http://minhphucvietnam.com/uploads/userfiles/file/3519103547.pdfIn PDF document text
    • http://permagnet.com/upload_files/file/210924202920891662gsp6s9.pdfIn PDF document text
    • http://zensushidanapoint.com/uploads/files/bitodob.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/17702924575.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/aced76b7a1910b7bc06171a5c3ae3bdf/63368826746.pdfIn PDF document text
    • http://kopdesign.nl/userfiles/file/gumusijus.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/7q99k96q1j2mu4108c2cck39e9/gexupiso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=elementary+statistics+triola+pdfPDF 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_off0000bf53.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bf53.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF53 10880 bytes
SHA-256: 83ebff9161e63d44ab66b4467db8aaa6ceeac464fa1ccfe9f2e9faf0ce0cc24d
font_01_sfnt_off0000d874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD874 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF086 18620 bytes
SHA-256: f79d2c93c944b56dc7b97cc43ca077c70287cffd1c68f664c1c6c3f280365602