Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3cfdd016f54aac…

MALICIOUS

PDF

296.1 KB Created: 2022-04-23 05:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 728e6d469b5ac92f2b4abd5908c011be SHA-1: 58e2c59f834c8bc72b7cacbac50e113ef6349202 SHA-256: 4e3cfdd016f54aacd54a6a2530f8ac1eb75496cff8115ff189a668c8e88a4348
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9425

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://loheb.co.za/XSRYdR1H?utm_term=iq+test+mensa+answers PDF link annotation
    • https://barrier.exma.cl/ckfinder/userfiles/files/84622563530.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/8aeecd.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/162369ba9583db---36403114741.pdfIn PDF document text
    • https://logosomuzabi.weebly.com/uploads/1/3/0/9/130969340/9bdf9f2b.pdfIn PDF document text
    • https://gujetorepirun.weebly.com/uploads/1/3/4/5/134502828/69e552efe.pdfIn PDF document text
    • https://harley.dataroom.tw/upload/files/41596296329.pdfIn PDF document text
    • https://naximoselotol.weebly.com/uploads/1/3/4/5/134581957/zogarura.pdfIn PDF document text
    • https://vumopofusub.weebly.com/uploads/1/3/0/8/130874587/manupavusid-vubivatanu-robevatetimix-panosi.pdfIn PDF document text
    • http://goldsunjsc.com/upload/files/gegubidutadogize.pdfIn PDF document text
    • http://konikanarrowfab.com/ckfinder/userfiles/files/tadire.pdfIn PDF document text
    • https://powerliteaac.com/userfiles/file/futux.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/61f714945d8169895c12f4e48ae792aa/zadipumi.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/162557cd651f81---1556573855.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16251353b6d141---75865818686.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/03ec5d2246e43c569d6b2adc9fa6c745/gidusidumogoxipatuwiwop.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/8e7e2dfe3.pdfIn PDF document text
    • https://gumorazolaluxaf.weebly.com/uploads/1/4/1/2/141250472/7d52d6837ef03d.pdfIn PDF document text
    • http://filmovani.eu/img-content/files/lafuzis.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1625659b6757b9---nobipobora.pdfIn PDF document text
    • https://fupefodomixeja.weebly.com/uploads/1/3/4/8/134889506/piniwir.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_off0004380c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4380C 16708 bytes
SHA-256: 5f637f6b28377e5ef689687ae9f10db6028e68e70d80e6877541d210374953d2
font_01_sfnt_off00046388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46388 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00047b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47B9F 10196 bytes
SHA-256: 05fd09ab5f4d2764cffecc81643e8b739352dffd30d049959475c6b02bce6474