Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddb859eebfcf3c6…

MALICIOUS

PDF

82.5 KB Created: 2021-09-16 21:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-25
MD5: 0b2a7db71c212d0dececd44dad423376 SHA-1: bf6e5bbdb5f94a9685982aabe81947f37dcbc174 SHA-256: 3ddb859eebfcf3c68c688cbeb482c91eba5da91d794fdbb0ecb4773437f7b921
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://35ju.21tg.cn/uploadfile/ckeditor/files/vegurixiwetat.pdf In PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/58263665385.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/pubuwavi.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5bcf03f62f56e8578d5e3862211aab6f/wabejusome.pdfIn PDF document text
    • http://jadeite.ru/images/file/mifanusitijuwekiran.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/xabelufit.pdfIn PDF document text
    • https://amigo-shop.105h.net/upload/files/tarakukenivuge.pdfIn PDF document text
    • http://maulich.vn/attachment/files/37250603225.pdfIn PDF document text
    • http://olguanaokulu.com/upload/file/kawifilenidumani.pdfIn PDF document text
    • http://lachambredechos.com/userfiles/file/56209711037.pdfIn PDF document text
    • https://chungcungoaigiao.vnpec.xyz/uploads/files/1945325465.pdfIn PDF document text
    • http://teleinwestor.com/userfiles/file/44377202559.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/44081483809.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/25726525746.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/5d6790ba0f6d825b86a5d95bf4275aa5/9028234173.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/35375687145.pdfIn PDF document text
    • http://studiobaliva.eu/userfiles/files/xukajewifu.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/nanusesukotigatebinigub.pdfIn PDF document text
    • https://tradegateindia.com/userfiles/file/kuvutaganufiri.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/zavetamukoven.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614169357be4f---fawojuvumupuxasinojem.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161374ae54e18e---41136991211.pdfIn PDF document text
    • http://ramenhajimetustin.com/uploads/files/70538326106.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=far+from+home+free+streamPDF 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_off0000de8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8D 10216 bytes
SHA-256: 01d9d06c4656c9618f066d6e77cd4481c0582af00792046b79c7c4b5f8cad7e1
font_01_sfnt_off0000f579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF579 18096 bytes
SHA-256: 9440a8feb2856d4e8542e4b72e67f2770437895fba853a4ce6b83e3697317d2e
font_02_sfnt_off000124c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1