Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa852248199e5996…

MALICIOUS

PDF

315.0 KB Created: 2022-02-01 08:10:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ba2df3175c047e1efb3eb0d6e3ca6af5 SHA-1: 38e06d36e06467ad045e5d8bb502d50ba93a7234 SHA-256: aa852248199e5996fdd151030546851256aa15a7549bbf747975bd60c84aa586
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8783

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wirut.co.za/XSRYdR1H?utm_term=adverse+drug+reaction+form+fda PDF link annotation
    • http://mondoacquapiscine.com/userfiles/files/dexex.pdfIn PDF document text
    • http://sino-web.net/filespath/files/20211029095402.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/xipeti.pdfIn PDF document text
    • http://willajarmar.pl/userfiles/file/76381000137.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/mitotifuvifudewo.pdfIn PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/xikin.pdfIn PDF document text
    • https://www.amazoniaon.com.br/assets/js/ckeditor/kcfinder/upload/files/pefeguru.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16195ac4f22371---rofeju.pdfIn PDF document text
    • http://teplospectr.ru/images/files/xenam.pdfIn PDF document text
    • http://flashdisplay.net/UploadFiles/FCKeditor/20211001013802.pdfIn PDF document text
    • http://kiajihlava.cz/UserFiles/File/75996592365.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/tth1q3qbd6tq5vjbedkk2deso1/dositufofagisevonu.pdfIn PDF document text
    • https://anctools.com/ckfinder/userfiles/files/44834052640.pdfIn PDF document text
    • http://araratmebel.ru/img/file/sopilezokujosowijibumax.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/94280504021.pdfIn PDF document text
    • http://biomehl.com/images/content/files/25809908687.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/remegejigevodak.pdfIn PDF document text
    • https://wigs4less.net/nbloom/fckuploads/file/pijiwexugop.pdfIn PDF document text
    • http://kaoli88.com/upload_fck/file/2022-1-9/20220109014622865675.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 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_off00047e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E4B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000494ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494EF 10920 bytes
SHA-256: 218a4e0bd7adb84e8e374406452bfa88ba126611c3fb212087460f175e2d244a
font_02_sfnt_off0004ae11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE11 17956 bytes
SHA-256: ccc939198753e8d0de2eab9afabbd3734a9b9678b47d42f780f5b99053a79c4a

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