Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af2436a34f9018d…

MALICIOUS

PDF

525.1 KB Created: 2022-02-22 04:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eab2a9c8db83d5b39b13f6ecde3d3a40 SHA-1: 6043fb3184fb754569181aeb79945741f249b148 SHA-256: 4af2436a34f9018d89298dc9edb4ab0cbe61e937adbe2a259682dd62d0fcde6b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4376

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://fecuq.co.za/XSRYdR1H?utm_term=candidate+soldier+application+form+2018 PDF link annotation
    • http://poltinik.ru/userfiles/file/34408269771.pdfIn PDF document text
    • https://bbcodex.com/kcfinder/upload/files/21828711977.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/8082b5bb06337f77b587964a86c7f681/75447991472.pdfIn PDF document text
    • http://tillyardci.com/userfiles/file/vamorepabogo.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/ziforuloxoxipe.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/86982224993.pdfIn PDF document text
    • http://recviem.ru/img/upload/86668262201.pdfIn PDF document text
    • https://nffcd.org/userfiles/files/narazugebalupifujoge.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1643285208.pdfIn PDF document text
    • http://khangvietdn.com/uploads/file/bejewirugemunamipat.pdfIn PDF document text
    • http://sooam.com/files/fckeditor/file/1210801756153c7784b44b.pdfIn PDF document text
    • https://horizontire.com/userfiles/file/vidapewujij.pdfIn PDF document text
    • https://principesgs.com/userfiles/file/jefanubofexopolabipofus.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202108261955346642.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/wenorodorubuzaganuliw.pdfIn PDF document text
    • http://virus-safe-zone.com/ckupload/files/wivivapisemurepo.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/2ltj83q920br13ils5vh9ejv44/wiguponozudugigisiwaxumu.pdfIn PDF document text
    • http://kangmeideyiliao.com/uploadfile/file///2021102308595161.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/selakuropobu.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/0889735ff2b4d331c897f56c47329747/7521734060.pdfIn PDF document text
    • http://pasted-radio.de/web/files/tuzag.pdfIn PDF document text
    • https://immo-macedo.lu/userfiles/files/dikasivulinugetogebodim.pdfIn PDF document text
    • http://btfa.tw/upload/files/39232414596.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007bd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD22 11312 bytes
SHA-256: 8eb5cf7c215e71e151149b6a858b1010761fbf074db60523a221dec6dc82871b
font_01_sfnt_off0007d7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7C1 20400 bytes
SHA-256: f6b020ebe031085e1b9e5e39dfcfbf5200de16af66ace31b72d4f626d33e9d94
font_02_sfnt_off00080df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DF1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9