Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e332e171ca135f2…

MALICIOUS

PDF

87.8 KB Created: 2021-12-08 19:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 6cfc63e4e6410f412f8f2b6dd182dbe1 SHA-1: 400b0f6f8af52b701a01898f549b31e6c6f67246 SHA-256: 4e332e171ca135f2a05ad49f115ee3b3bdb817e7095bd577d0e8911d75a1fdbd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://mrhobbscoffee.com/images/uploads/file/9267800469.pdf In PDF document text
    • http://khojedu.net/userfiles/file/suguzabexizutididikifupe.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/1450964974.pdfIn PDF document text
    • http://dulichtantai.com/files/uploaded/files/61147030438.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021111512371073499.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/tdo2oomc4jfmb16k5v56c5luo0/3767913408.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/65182395839.pdfIn PDF document text
    • http://ooexperience.be/assets/Image/files/vonejogipajawunem.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/livijivelomigezutovome.pdfIn PDF document text
    • https://everestart.com/images/stories/file/wadivanekela.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/xafalapijurejegi.pdfIn PDF document text
    • https://makanbanyak.net/contents/files/74382408179.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/zusobisogapumodedibafaxi.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/s49l6i2j56uj7024feost4igf7/tateburixatimilofigodut.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1619a0f7961b38---nutujewivajibego.pdfIn PDF document text
    • https://sino-islam.com/upload/file/170317335994.pdfIn PDF document text
    • http://sky1981.com/asset/uploads/files/51358600564.pdfIn PDF document text
    • http://bachtungcompany.com/upload/files/3330714493.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/89396525910.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/1078122746.pdfIn PDF document text
    • http://word.mn/uploads/assets/wezesapifivifow.pdfIn PDF document text
    • http://kustari.net/userfiles/file/kedasefu.pdfIn PDF document text
    • http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/31294023474.pdfIn PDF document text
    • https://12shio2.com/contents/files/70108332955.pdfIn PDF document text
    • https://extremedriveline.com/ckfinder/userfiles/files/58889831833.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/HKUGBsJGI0E/uplcv?utm_term=strength+of+materials+pdf+singerPDF 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 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_off0000f02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000106cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CC 18832 bytes
SHA-256: 352f62834af13253322de2672a464e13a59b9a893c1dd3ecc9cd7a3f6ec2b802
font_02_sfnt_off00013842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13842 11020 bytes
SHA-256: 5df0378adf488ce83e74a92de9b005083cc62d4097cc1b982989ef7e8529527c