Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e31149812ebb8b6…

MALICIOUS

PDF

82.4 KB Created: 2021-10-09 18:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 9e2742ea6aeaa5b6d44106a95554ab18 SHA-1: 324532496311f837315219afed2bcb111703e3d2 SHA-256: 4e31149812ebb8b60e5cace44d28a7128d18699f43d6e99d085dc5fc89868fd9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613edf15b49d3---41712644760.pdf In PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161347db7ece19---suzurigozawo.pdfIn PDF document text
    • http://mebco.ru/images/file/mefokufubamiganimikasidaf.pdfIn PDF document text
    • http://phanmemerp.vn/attachment/files/7893876573.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/vexabiwabowupagobuxi.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/snkt564uajj3rpfi37ek8s7mc5/50808410111.pdfIn PDF document text
    • http://thechitay.com/uploads/userfiles/file/36397394304.pdfIn PDF document text
    • https://100tmt.com/uploadimage/files/20210901164938.pdfIn PDF document text
    • https://digiconelectronics.com/media/fipapekutipedaz.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/31056202553.pdfIn PDF document text
    • http://besttailor.info/ckfinder/userfiles/files/71567661531.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/161533af344292---73921846717.pdfIn PDF document text
    • http://danceaction.be/userfiles/file/diwigojisixofarudu.pdfIn PDF document text
    • https://vgi-vn.vn/app/webroot/img/files/37295066402.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/6113059239.pdfIn PDF document text
    • http://gwynnoak.abwingsmd.com/uploads/files/30504260678.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/26158923784.pdfIn PDF document text
    • http://rklatex.com/userfiles/file/birogopaxezifu.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6604671ad---rotenenegugowonu.pdfIn PDF document text
    • http://santabruna.cl/upload/file/21897813403.pdfIn PDF document text
    • http://munnarteabungalows.com/userfiles/file/bezaninisudatibix.pdfIn PDF document text
    • http://geomanteia.com/userfiles/files/zokezo.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tetun.pdfIn PDF document text
    • http://gdfsztal.com/uploadfile/files/88806061063.pdfIn PDF document text
    • http://keralatravelpath.com/uploads/file/nidopakirixanizoj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ielts+speaking+cue+cards+may+to+august+2020PDF 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_off0000d88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88E 18664 bytes
SHA-256: 4ce924ea33078ddb5294fbc1a4c47c167c9e2dcb79c7e2dce1fe6427f89103b3
font_01_sfnt_off000108e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E7 11356 bytes
SHA-256: c32fce981ff109455e3242cc49d2eed362d5597e0dc65d77b743cd8d52b077ad
font_02_sfnt_off00012389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12389 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1