Malicious PDF — malware analysis report

Static analysis result for SHA-256 5508750757cecc24…

MALICIOUS

PDF

82.9 KB Created: 2021-10-06 03:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: e36ca884d9f423e2fc9b15604053fa86 SHA-1: 80c6508486b0c6b14877bd0aa11359c2e70532fa SHA-256: 5508750757cecc244e7c723539b4e7a6bc136b26fcc97e42380cfab08c2a5b01
151 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a PDF advertising pirated movie streaming and acting as a link farm on disposable hosting. The document body contains numerous URLs, suggesting a phishing or malware distribution lure. The embedded URLs likely lead to a second-stage payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • 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 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://laborke.ru/uplcv?utm_term=all+the+bright+places+fmovies PDF link annotation
    • https://f27szerviz.hu/upload/files/19730586008.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/vugepefitajapu.pdfIn PDF document text
    • http://sedaciesupravy.sk/media/file/zuxofasu.pdfIn PDF document text
    • http://pincodehub.in/userfiles/file/52887967639.pdfIn PDF document text
    • http://playoz.com/ckfinder/userfiles/files/32102160679.pdfIn PDF document text
    • https://5uempat.com/contents/files/jagasogenit.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/13806108089.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/sesazifu.pdfIn PDF document text
    • http://xn--80akoseq9f.xn--p1ai/userfiles/file/kemudowadabixig.pdfIn PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/bifanagifir.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/17460700313.pdfIn PDF document text
    • https://administrador.bannik.com/benkio/files/xegarujijitusu.pdfIn PDF document text
    • http://e-baze.lv/images/site/file/81085696614.pdfIn PDF document text
    • https://035620126.tw/upload/greenkitchen/files/fikaxevo.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d67d4093f1---27365042074.pdfIn PDF document text
    • https://szabolcsipeter.com/userfiles/file/308633629.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/12315652302.pdfIn PDF document text
    • http://fourfoods.com/images/files/73922888195.pdfIn PDF document text
    • http://cachnhietcacham.vn/Images_upload/files/zufafo.pdfIn PDF document text
    • https://durgabas.coop.np/ckfinder/userfiles/files/xazowevu.pdfIn PDF document text
    • https://renfrewareahealthvillage.ca/ckfinder/userfiles/files/43263293727.pdfIn PDF document text
    • http://ariogalospspc.lt/userfiles/file/dajudonopilakex.pdfIn PDF document text
    • http://edukoc.net/userData/ebizro_board/file/87212300930.pdfIn PDF document text
    • http://themetamorphoseprogram.com/userfiles/file/busulo.pdfIn PDF document text
    • https://euronuts2009.ge/files/files/kanuzokoguzurixa.pdfIn PDF document text
    • http://veoguidecostarica.com/ci/userfiles/files/43060219481.pdfIn PDF document text
    • https://olympicwroclaw.pl/zdjecia/fck/file/64016828753.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_off0000dd27.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dd27.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD27 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53E 11008 bytes
SHA-256: d0f4570ff330be0b240b04c7b41b8b391924ae664887e9c73bd59e906a3ed796
font_02_sfnt_off00010ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAD 18204 bytes
SHA-256: bad71c27f8980c94f841eafaacb4fda5d295873f86e169cf9638c33ebd5228bc