Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8663099f1681fb…

MALICIOUS

PDF

502.0 KB Created: 2021-12-23 01:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: ed48ce2a772c4afdce6fb32309d0a6de SHA-1: 18e9d92650b0a9986a2b23f76268e090926d2d8f SHA-256: 5d8663099f1681fb9739dcc59ebcfff5e6c91482ba67d561ad024b9121ec5536
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2996

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://myclubowners.travelenvogue.com/userfiles/files/72248657807.pdf In PDF document text
    • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/newumizoxevawabumepef.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/81556572940.pdfIn PDF document text
    • http://portalpr-b2b.es/img/user//file/_0268282001637267671.pdfIn PDF document text
    • http://enricobarraco.com/files/jawijazivuvidevumunurofik.pdfIn PDF document text
    • https://rheinfurth.de/userfiles/file/wasovuvaxusevedofaguje.pdfIn PDF document text
    • http://hmondo.com/userData/board/file/51705867867.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616c4b48d55b7---46947570645.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1619fcb847f0e6---73447005114.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/81714009157.pdfIn PDF document text
    • http://yachtandtrade.com/files/79752629524.pdfIn PDF document text
    • http://quetthe.com/upload/files/tupat.pdfIn PDF document text
    • http://iiiemjobs.com/FCK_Editor_Images/files/moboruwinowufifowez.pdfIn PDF document text
    • http://bep-au-cong-nghiep.theonejsc.com/userfiles/file/kefawokipikalefokafuki.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name/files/naxulunam.pdfIn PDF document text
    • https://alsultantrading.ae/userfiles/files/43198948827.pdfIn PDF document text
    • http://expresskaliski.info/file/24322337957.pdfIn PDF document text
    • https://penmypoem.com/new/admin/uploadfiles/file/93629341463.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16179b9ed5c4ce---69119626562.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/4fcab4a8a8978e2258ac11c736e89463/zojigoxis.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/gukuvexinotidonewinugaku.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/maniwumulowokibojuzafafo.pdfIn PDF document text
    • http://studiofantino.it/userfiles/files/zugedagabulunujeromu.pdfIn PDF document text
    • https://aventuraholidays.elladatravel.ro/mm/file/xomapo.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/73128877564.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RC0zOYPQW8A/uplcv?utm_term=free+recorder+ensemble+sheet+musicPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00074315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74315 21532 bytes
SHA-256: d680b254482a26d0ea580b2e83ac08696e3ac03d94e9e7b22760ee38fcb69e6c
font_01_sfnt_off00077918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77918 16084 bytes
SHA-256: d11bfa2b02c462a3f9075532ce7ec1132ca3691ccd6a850e0dcf0119a218c04c
font_02_sfnt_off00078e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E47 2456 bytes
SHA-256: 0d4bf95d24a6cf33e1fe041f5fd105f66f5b0efde6c0b56d1f349135d983fb8c
font_03_sfnt_off000798bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798BD 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_04_sfnt_off0007af61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF61 10688 bytes
SHA-256: 4c09a8c4cadcbdfbc804147014f2fdf71fb7b43aaa3aa08734e2f7a8b58d2454