Malicious PDF — malware analysis report

Static analysis result for SHA-256 258cf32833d3e171…

MALICIOUS

PDF

396.3 KB Created: 2021-12-25 05:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: bbe2d4ed7d94638c6687583f3da7a0fe SHA-1: 183f9f7a8ea7955e5754b6c6dd5ca029785364b6 SHA-256: 258cf32833d3e171610eb7220cc5d4df6d135c6ee7de9426358a84ecd2d7739b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6486

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://nomylo.ru/uplcv?utm_term=bobcat+hunting+guides+in+florida PDF link annotation
    • http://chaputlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/38962026213.pdfIn PDF document text
    • http://investbuild.ru/var/upload/file/23127269684.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/rajowovepila.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/wivujisiwise.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614343771ee78---78876412033.pdfIn PDF document text
    • http://25630638.kad.tw/kads/ckfinder/userfiles/files/96643397389.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616f140e26204---givaza.pdfIn PDF document text
    • https://usgcambodia.com/userfiles/file/49409845479.pdfIn PDF document text
    • https://www.hkha.org/ckfinder/userfiles/files/93693479151.pdfIn PDF document text
    • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/14574093886.pdfIn PDF document text
    • https://ski-valloire.com/ckfinder/userfiles/files/57136210777.pdfIn PDF document text
    • https://pointwebhost.com/calisma2/files/uploads/94483332788.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617796a84f4e2---fotodivenebonekanawamizom.pdfIn PDF document text
    • http://hbaoge.com/upload/files/78986705977.pdfIn PDF document text
    • http://ntvietnga.com/upload/files/23202510949.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210911134429.pdfIn PDF document text
    • https://zenithoverseas.com/assets/userfiles/files/53997440089.pdfIn PDF document text
    • http://apmweb.almaproject.it/public/userfiles/file/68395810603.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/moromametikubeg.pdfIn PDF document text
    • http://anninh247.info/upload/files/poduzozediwativepumabi.pdfIn PDF document text
    • http://www.cpl.odrolnika.pl/kcfinder/upload/files/49279731010.pdfIn PDF document text
    • http://patp1ryb.ru/media/file/58710411290.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/45858876900.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_off0005b982.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b982.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B982 11048 bytes
SHA-256: 931aff107825fec9ffe5e145e890e47433d4c3661ade6f16cb72c23f9bfbbc5d
font_01_sfnt_off0005d2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F8 1780 bytes
SHA-256: cf43ea07d0e14c5dadc3c8d1a3fd6347ba51c91ab3c5d9ef8ee3d45ec84741db
font_02_sfnt_off0005db65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB65 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_03_sfnt_off0005f204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F204 18712 bytes
SHA-256: a22a55f4016595ac7227350ef3072522f6550f471d6280e8cd4a9a0125fc2cc7