Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3efd676d2aa9a70…

MALICIOUS

PDF

79.4 KB Created: 2021-09-06 08:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 3fd138fcc20271a12477a6859fbc9702 SHA-1: 891daad6d0f6efe2f516b25f1909b762e89252ba SHA-256: d3efd676d2aa9a701af32bca2411f21dac1c1a66f75777d8f3b7e6bea03cf890
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://smobiil.eu/userfiles/files/jewigisolu.pdf In PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-6-3/20210603190537445530.pdfIn PDF document text
    • http://bigandtallking.com/userfiles/file/puzoratexutakogego.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160985bc168bd0---5629968516.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/28634450144.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/161359da71676a---19032194851.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080009a7c594---3665921815.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/7bb120rrcvg26kkuhcho8o7832/goxutekitonegafog.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/99047235185.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/745434d97d4843e0541aa1d2cc8c2976/59460897230.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a862d678026---xodizijatupavewaj.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/11cbfc8da6229bd7d11a33b443a0e24c/fosatavavudoxigil.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/d89a0b46c4a40a31930c3ac83b9370a1/girer.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/8783ba4e455562f23942e5c721de52fc/tefatiwibofivem.pdfIn PDF document text
    • http://homeopathyhongkong.cn/files/dafojedekive.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160f6daecdfdcb---vagimaguwexutipudex.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/mutujerefejazik.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20210803210641.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/isdmmdqs0pulqp4mjflgfg8keo/99968637260.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/65872021344.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dcd56c952e---96344182916.pdfIn PDF document text
    • http://mrspk.com/ckfinder/userfiles/files/90309095193.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=center+point+scope+3-9x32+manualPDF 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_off0000caa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA6 19356 bytes
SHA-256: cc48775a373611109faf5e691c7277a27c5c4b486bd3d3202ab55ba3c80200cd
font_01_sfnt_off0000fbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF0 11260 bytes
SHA-256: b1d3b2dd13cb690e9adf1295ddffca9f362d8f06d1f1c6ba8c54ac5c7f4ffdf2
font_02_sfnt_off0001168b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1