Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d075efd3394c7…

MALICIOUS

PDF

73.7 KB Created: 2021-11-22 02:12:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 794a8fb30b113d721dfa22bd74988401 SHA-1: 71449167b617c2d360198c2484da82ce08fcd487 SHA-256: aa8d075efd3394c7463e75a0399b5f7039a47db42a017164b54798ea71660d9d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613211ff70260---46368917550.pdf In PDF document text
    • https://sakkestadbil.no/userfiles/file/29222980932.pdfIn PDF document text
    • http://digitalpolicycouncil.org/imagenes/file/tezovigemifavokopinemubu.pdfIn PDF document text
    • https://chinese-wall.tw/upload/files/daxanu.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/nezekoneku.pdfIn PDF document text
    • http://golfvillageonline.com/userfiles/file/9694101819.pdfIn PDF document text
    • http://hexindechem.com/upload/files/dojoguxajawidawonulabog.pdfIn PDF document text
    • https://pinkrali.com/calisma2/files/uploads/36512419113.pdfIn PDF document text
    • http://www.sloepverhuur-debiesbosch.nl/upload/files/sezizomixoveporig.pdfIn PDF document text
    • https://losaltos.com/wysiwygfiles/file/71565173308.pdfIn PDF document text
    • http://namlinhchivietnam.net/userfiles/image/file/36379065186.pdfIn PDF document text
    • http://xn--m1age8bh.xn--p1ai/files/file/16954512466.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/zodukog.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/3f6f7175c24321ace4d0a41fad27ac52/39873004948.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/najijofinudikulonixenub.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/b2d568f4e945b4408331963b2c06107d/26954214151.pdfIn PDF document text
    • http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1633942285.pdfIn PDF document text
    • https://barcelona-health.com/files/galeria/files/57834588702.pdfIn PDF document text
    • http://khunghinhdepphuctin.com/media/ftp/file/22420030641.pdfIn PDF document text
    • https://dom4m.com/userfiles/files/jofekiwudexugobi.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2b8843264---kekopafazufiw.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1618c813a404f0---nupafaxesorinejor.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/BcFPVxLj4jw/uplcv?utm_term=dengue+in+adultsPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC133 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000d7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 16552 bytes
SHA-256: c4bc7fb5f039253643369c53e2e597aedc4325387052420944554f2d1f7c6e56
font_02_sfnt_off000102cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CB 10304 bytes
SHA-256: ffe54f4323fe7a5c489853b8367c34ce13f9915c6b9372798fe9421c0b101be1