Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af57b875bf6303c…

MALICIOUS

PDF

330.5 KB Created: 2022-03-11 18:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 61e90c2a6941d16a13b8a54ef404268c SHA-1: 8a156d1fe0f63fdafa078dccbce8bf1eaf8bfd4c SHA-256: 4af57b875bf6303cb4fa8598e8d9868c192111d7744ee93b0451aee327ac2828
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6569

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
  • 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=busy+busy+song++djyoungster+neha+pandey PDF link annotation
    • http://cutyoursupport.com/userfiles/file/99294904866.pdfIn PDF document text
    • http://chafewyuok.handysociality.com/upload/files/zodadabi.pdfIn PDF document text
    • http://stowarzyszeniemalyksiaze.eu/img/upload/files/poguxevevinozisolu.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16210d1a2cae7c---lipozu.pdfIn PDF document text
    • https://suruburi.net/mm/file/zonewasusatosiduji.pdfIn PDF document text
    • http://promerilaclama.com.tr/panel/kcfinder/upload/files/barosufenisax.pdfIn PDF document text
    • https://unstitchedutilities.com/files/file/koloxovowikad.pdfIn PDF document text
    • https://cissud.com/uploads/ck_editor/files/xanapufipifedezaf.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621940b0e377b---vamur.pdfIn PDF document text
    • http://hakemokulkiyafetleri.com/upload/ckfinder/files/dizedixi.pdfIn PDF document text
    • http://gibisch.org/files/files/6756710740.pdfIn PDF document text
    • http://abcbyspu.net/ckfinder/images_store/files/79247322168.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/wuxawerejelenelisitak.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620a70ae92dd2---rororumajoxekinibuviliv.pdfIn PDF document text
    • http://khamtrai.vn/userfiles/file/63093622552.pdfIn PDF document text
    • http://netcentricnj.com/ckfinder/userfiles/files/34780010675.pdfIn PDF document text
    • https://www.cltservices.net/backoffice/kcfinder/upload/files/1941547915.pdfIn PDF document text
    • http://ger.versa.ru/documents/files/87611582403.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20220202111135.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16204ee8234512---97050887920.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/bizuzigifo.pdfIn PDF document text
    • https://www.tocarufar.com/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/12413627726.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/dupixodefosaxan.pdfIn PDF document text
    • https://pointvirgule.ca/upload/editor/file/xojosutajowid.pdfIn PDF document text
    • http://www.icmtravel.net/assets/ckeditor/kcfinder/upload/files/xebonufonek.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000498e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x498E2 11072 bytes
SHA-256: f3c4261c86ad64bc8f80575d32d6a441a47bc4e977c27d9621160dfdf35a76c7
font_01_sfnt_off0004b255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B255 22704 bytes
SHA-256: dfba86ca8eef868dda965c2ee2cff74d26deef4eedb827faa96e790ebc0216dc
font_02_sfnt_off0004ed6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED6D 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_03_sfnt_off0005036f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5036F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9