Malicious PDF — malware analysis report

Static analysis result for SHA-256 1911954490712f78…

MALICIOUS

PDF

73.7 KB Created: 2021-09-10 08:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: aa4f77de26dae4d7841efe04a5dd0128 SHA-1: 71695baac359386124b6dc55af133ce1c6a91177 SHA-256: 1911954490712f788a2cdb15496264b55d5f9562ea138b5ed16821e12529c4b9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/16385960859.pdf In PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wawujuki.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/161357b210bbe5---1316440421.pdfIn PDF document text
    • http://sloplast.com/userfiles/files/vewexobamokekadobuzaza.pdfIn PDF document text
    • http://htygroup.com/upload/files/zesugelazisax.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/bunetomareka.pdfIn PDF document text
    • https://habibitoursegypt.com/ckfinder/userfiles/files/jozoka.pdfIn PDF document text
    • https://giant-nano.com/app/webroot/userfiles/files/zanemavojajurejapivunudab.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/saxotig.pdfIn PDF document text
    • http://runo34.ru/attachments/file/rajelusavepuxosub.pdfIn PDF document text
    • https://nacionalequipamentos.com/ckeditor/uploads/files/20438580347.pdfIn PDF document text
    • http://chukguwang.com/files/fckeditor/file/10581556529.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/sabirake.pdfIn PDF document text
    • http://24hnbc.com/assets/ckfinder/core/connector/php/uploads/files/salatuloporufabobakase.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/23463487284.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/vinesugeviruvibitubuzuge.pdfIn PDF document text
    • https://abouelhoulgroup.com/userfiles/files/22873883653.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16132711b69dd9---neviviwabemalutapajanujag.pdfIn PDF document text
    • http://ndt-ultratech.com/files/pususefamepiwalod.pdfIn PDF document text
    • http://parkingparts.com/Upfiles/file/samenuverirelodepelig.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/83494989925.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/puposerixufagekulesozebuv.pdfIn PDF document text
    • https://telliogluhukuk.com/userfiles/file/66480104051.pdfIn PDF document text
    • https://mimpishio2.net/contents/files/gifezimeverodoximon.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/dee3cab0c30a39689297a7e440da9b26/biruviruzifipizilivikonis.pdfIn PDF document text
    • https://seerupit.dk/assens/file/1169528058.pdfIn PDF document text
    • http://unsersohn.ch/images/file/nomilupisaje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=android+1+payback+2PDF 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_off0000bd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD39 16956 bytes
SHA-256: ec664b1dcc686aaf5d66e04bc40702459f9c9540c19eb063ad9fe37555d12480
font_01_sfnt_off0000e903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE903 10564 bytes
SHA-256: 44125badc7450e19de90068f87acb5d85aee99d10a2f2a86328ce88ba05ead8b
font_02_sfnt_off0001010f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1010F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1