Malicious PDF — malware analysis report

Static analysis result for SHA-256 547f2ab135431c85…

MALICIOUS

PDF

88.7 KB Created: 2021-06-28 11:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a6e6246d12781661001fd6d1f07ecd5b SHA-1: 478d79bd4ca4f3e52de460ba9e97debc8a3151f9 SHA-256: 547f2ab135431c85c7b772504ff7432b5791e08b384a2ebff402938820002af0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://hyundailed.com/upload/editor/file/lurovalutumavi.pdf In PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/3t3kl6q05bg3ocii3is68hll39/93946925241.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/t9ib5avdm51i1vv3gsqkhgq3t1/pemamogidakedabekiza.pdfIn PDF document text
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/3353e1b692a7ff351df6460c9f6e7548/26473268303.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/kibewuzuril.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/37759395867.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/sirawakinumib.pdfIn PDF document text
    • http://hoteldanang.vn/uploads/images/files/newidolapajuvirapunogafo.pdfIn PDF document text
    • http://cbwmd.com/uploads/Files/34231219682.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/5fulp3gv0q7baof8lr553befe0/46569342429.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/62322121849.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/astte269vkhgslfiil53dfnb5o/70181483441.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/gerekulokat.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/jevatepupejixidera.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16070a44bbb4bd---33034042659.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/d5612e4f1bb389a53bb1198114acd2e5/24516571851.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/s2km78458037r11gu6qul9ko25/gudewomexubepatigo.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/90953863846.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/0f4c13d2648e1f34b3a6962076b7f3ac/65687376576.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094a02f0d87a---bebepubasasowujuninakew.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b2b751e4d6ee7dd72a25cf95515bf234/milogebazoponafadikexas.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/67231100379.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/mijalugetitofonu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=francis+ford+coppola+one+from+the+heartPDF 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_off0000f081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 10864 bytes
SHA-256: 1cc511f096923a0d39958d8e5d88d83b6dc23b722d247f93eca18f990b249b39
font_01_sfnt_off00010957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10957 20220 bytes
SHA-256: bb8fa1b262595d2e872f440e21c919f3f91a91bcec95a2d4da9e1d87a1dabf76
font_02_sfnt_off00013b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B78 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1