Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f8201def08b5f9…

MALICIOUS

PDF

329.6 KB Created: 2022-01-12 19:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: a3dc7c3d409dd44c414b632fd801faaf SHA-1: c70fa4ff51a6747a69411c120905d21e27b4d0d1 SHA-256: a4f8201def08b5f97b1cf5ce9aa01bf84e99accfaf121628b9cb140598d90a81
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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 http://langeline.com/ckeditor/upload/files/pozebepiginodetidomogotow.pdf In PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/malazakujatarerepoxixid.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/fokerowatujineti.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/82454276618.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/85b5c914c806417964920b223d6aa72f/74690706832.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/96363559604.pdfIn PDF document text
    • https://sukaunited4d.vip/contents/files/59886164672.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/5igf47fvjlppskaoillkrqflos/97245162244.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/livogorudagaz.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1615d9a4b975ef---wutugatepebomanegidugizer.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/23729974430.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/33157784746.pdfIn PDF document text
    • https://thaibamboorestaurant.ca/phpsites/bard_ford/uploads/file/31689205653.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1618fb59d37270---92593393215.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/jepixomimeto.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/183c37fc0970ff8a1f350a93026e0f99.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/jagakafexil.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/c40eb81fbd57a8eca0d40f9060e0ac4a/fazelopetuj.pdfIn PDF document text
    • http://stainless-faucet.com/uploads/htmlupload/files/leposowebaxasewi.pdfIn PDF document text
    • http://huarui-bio.com/upload/files/zokigelita.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1616dd37520009---vewugagewopotenabupajuze.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/4258136356137265f95b8f.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/xofukariruni.pdfIn PDF document text
    • http://vxclouds.com/userfiles/file/25191989471.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/7xhmvLXWVJc/uplcv?utm_term=autodesk+trueview+2016+64+bitPDF link annotation
    • 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_off0004b81e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004b81e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004b81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B81E 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0004cebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEBD 18012 bytes
SHA-256: b92e27a4d88db877e8132d1657a1fad591e4650406db0925a349856c63df6066
font_02_sfnt_off0004fe0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE0E 10936 bytes
SHA-256: 960d6f3d7158322ffa4148d42311b19ee7b752bdc89dfbd7c7c2386091007ec0