Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcd526e6cd2add2…

MALICIOUS

PDF

282.0 KB Created: 2022-01-22 20:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: a6927a3d6f8abe9b2306813b2b4a4c45 SHA-1: 8d4825397bd1ced5032bcf6227bf19141a268510 SHA-256: 3bcd526e6cd2add27fa2baa4434f2ca47c603bf33d59429b2b87bee660da9e78
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6618

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://queure.ru/uplcv?utm_term=what+is+coliform+in+water+sample PDF link annotation
    • https://abyss.sk/userfiles/file/xibetoko.pdfIn PDF document text
    • https://nbretail.com.vn/ckfinder/userfiles/files/52017033596.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/71362056264.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/ebb42ea9d6af54b56f46cf6fb06c6b17/74252038455.pdfIn PDF document text
    • http://jph.kr/userData/ebizro_board/file/72552628684.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/xupexobifoxuvuvisefesug.pdfIn PDF document text
    • https://exporoaster.com/app/webroot/files/images/pages/files/dusigugukepo.pdfIn PDF document text
    • https://consultemergingmarkets.cubsindia.com/files/bojovitegusararaluxigofiw.pdfIn PDF document text
    • http://maysoi.com/hinhanh_fckeditor/file/51575171952.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/202197714486559.pdfIn PDF document text
    • https://cplastik.com/data/cms/file/74939712275.pdfIn PDF document text
    • http://cuacuonnhaxuongbinhduong.com/upload/files/xevopilimasegariwazufa.pdfIn PDF document text
    • http://tokado.ua/media/file/68762964993.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202111121457238010.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/161517fde32f25---rekezajisiguxuwukol.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/sexejurefiwe.pdfIn PDF document text
    • http://kalmi.ru/upfiles/files/44021920899.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/6ujmm8otc5v222d0jjmmnjh3tl/21590121527.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/88242886046.pdfIn PDF document text
    • http://zjhywt.com/images/upload/File/momonexedafidebodumetatu.pdfIn PDF document text
    • http://stsmcc.org/www/js/ckfinder/userfiles/files/fanidolovube.pdfIn PDF document text
    • https://windscrm.net/files/file/99796201318.pdfIn PDF document text
    • http://duetsepolno.pl/userfiles/file/dovofaseb.pdfIn PDF document text
    • http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202111/file/mavunetukekinu.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/85161282305.pdfIn PDF document text
    • http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/luzaxutonupi.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161a79394b5658---tijutemitu.pdfIn PDF document text
    • http://alrehabourhome.com/userfiles/files/13156516192.pdfIn PDF document text
    • http://web5gstore.com/Files/files/41197754734.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 extracted file (font_00_sfnt_off0003fca0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003fca0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003fca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FCA0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00041344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41344 10824 bytes
SHA-256: 6f5318f345ae6bacfda97355e5168a78bb11a85085034a113ad8c30b400e8883
font_02_sfnt_off00042c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42C18 16992 bytes
SHA-256: ba91f1511dbcca266e382b7dfd6cd406372292f12370f797fe014d50778b96df