Malicious PDF — malware analysis report

Static analysis result for SHA-256 550797f389b4f5d9…

MALICIOUS

PDF

289.6 KB Created: 2022-03-15 22:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 3e1642db2c8887407ef1a0aa7bbb8fd4 SHA-1: 52b22894e7e535ac66aefc05a0a7e9aad98dc1ed SHA-256: 550797f389b4f5d950ea4ff2513fbcca065fec7cc06ba14ccd30cc7a68ab193d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7088

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 https://colod.co.za/XSRYdR1H?utm_term=autothermal+reforming+disadvantages PDF link annotation
    • http://1night2day.com/UserFiles/file/35854091413.pdfIn PDF document text
    • http://guss-ex.de/uploads/fck/file/jeverewofo.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1622c03b3ae1fd---lemug.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/11460479282.pdfIn PDF document text
    • http://mpapir.ekopapir.com/images/files/jasoxewupugabuw.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///41785817020.pdfIn PDF document text
    • https://boulou.mrjean.fr/userfiles/file/66950241960.pdfIn PDF document text
    • https://yapluka-services.fr/userfiles/file/11234623535.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161f9e94611907---70957063499.pdfIn PDF document text
    • http://robodit.ru/kcfinder/upload/files/31710998675.pdfIn PDF document text
    • http://huthamcauquanggiap.com/upload/files/22677468987.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/83651440531.pdfIn PDF document text
    • http://dzido.pl/userfiles/file/gogiv.pdfIn PDF document text
    • http://www.siposferenc.hu/html/54373453873.pdfIn PDF document text
    • https://realestatesplatform.com/userfiles/file/45239714027.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/pjis6je9267j3e3noh0r2ihej6/tozejer.pdfIn PDF document text
    • https://arteziano.ru/ckfinder/userfiles/files/5264948418.pdfIn PDF document text
    • http://spasinnia.org/assets/ckeditor/kcfinder/upload/files/72226132620.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/71ab261a6243265993f8338aa42cb240/fezudukizevelebuvejale.pdfIn PDF document text
    • http://afro-safari.com/upload/files/bamemokufizezugoriboso.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/komonetireginarovanop.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d84ccb0b4c---dowuzagasinevivilupujok.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_off0003f965.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f965.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F965 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00041085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41085 10948 bytes
SHA-256: b3987d45a69c403f6654cdfc0857d37ac43a91a9f0d8a080abde657acb84a85d
font_02_sfnt_off0004298e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4298E 21128 bytes
SHA-256: a9d3ad214938f491d420d5f09eee6e968860b3be75f64e35fa56881b3f68b6e6
font_03_sfnt_off000460f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x460F9 16348 bytes
SHA-256: 96d6636de89b52a622ec353bcb71a9ccdec875ad6710af75b32b304cb9488bb3