Malicious PDF — malware analysis report

Static analysis result for SHA-256 018b544f9294dd64…

MALICIOUS

PDF

313.6 KB Created: 2021-12-28 21:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-08
MD5: 738a9a80f822e4da1d73932bfe380f1d SHA-1: 77fc59f1846077f529b4f5105d59ac6add2f2268 SHA-256: 018b544f9294dd6484e249ace1912302958da772f5c69695ae85b6d245384026
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7819

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://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1617693944478b---susemo.pdf In PDF document text
    • http://captainkillmite.com/uploads/files/202111081908217987.pdfIn PDF document text
    • https://nurdagihaber.com/resimler/files/jidurojunumuruziwo.pdfIn PDF document text
    • https://seeyounow.net/userfiles/file/gekunizogaxibobuliramise.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1618463b7e4b06---vekifixexosusesuku.pdfIn PDF document text
    • http://jungam21.com/upfiles/file/1636715609.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/junebixuzunewexijufoxesez.pdfIn PDF document text
    • https://umartravel.com/files/sifufotorimijilofube.pdfIn PDF document text
    • https://mitrasuksesku.com/userfiles/file/lizinuxoruwig.pdfIn PDF document text
    • http://lhwytsg.com/js/upload/28551275258.pdfIn PDF document text
    • http://teen.plovdivweek.com/js/ckfinder/userfiles/files/56627949924.pdfIn PDF document text
    • https://ringid.vn/ckfinder/userfiles/files/16738205238.pdfIn PDF document text
    • https://ka-base.no/images_content/file/felarixujep.pdfIn PDF document text
    • https://giasidaily.com/uploads/userfiles/file/xovuwivuwudivakimuxome.pdfIn PDF document text
    • http://aibasylhet.edu.bd/app/webroot/ckfinder/userfiles/files/65865919387.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/29457733583.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619a00b68e764---foxexabadekusota.pdfIn PDF document text
    • http://vinaaquachem.com/uploads/files/80645388918.pdfIn PDF document text
    • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/6480383150.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ab5ee07f706---mirerezuvedivufovibovizes.pdfIn PDF document text
    • http://ranchobg.com/img/file/gokozunisamelaxek.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/zarejojefugejudafogobasav.pdfIn PDF document text
    • http://www.cerradurasytornillos.com/gdc/kcfinder/upload/files/gegadefenumaxaxozoji.pdfIn PDF document text
    • http://ogledalata.bg/uploads/pages/files/24495834064.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BcFPVxLj4jw/uplcv?utm_term=hugh+jackman+brit+awards+2019+performancePDF 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_off000474a0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000474a0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000474a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x474A0 12020 bytes
SHA-256: 13485d2893495bc56dbaecf61362866afda3a2d5570a40c2cf6de41b2f346533
font_01_sfnt_off00049114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49114 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004a7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7B3 18428 bytes
SHA-256: 551fc1d876fdb25e7bddeeafb57c2cc2f7f9fec806f5c322f2d0cec83b2ae369