Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa84563d31e407a2…

MALICIOUS

PDF

82.4 KB Created: 2021-09-12 12:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ec326a1cb1bfbf48abf4d45e08eea277 SHA-1: 5e53ab78a9d96d7c054cc8af3ec4b4d3919524ac SHA-256: aa84563d31e407a29e5650a6668e64d444a96bfd69f5d4a0f916394dabf08c21
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://musikkursus.dk/userfiles/file/35042738486.pdf In PDF document text
    • http://eatatrudy.com/uploads/files/lekobarugim.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/c53qdl69ha0ri9pb5m1j6n2me6/dokonubizukop.pdfIn PDF document text
    • http://elskenecologie.nl/files/zowudek.pdfIn PDF document text
    • http://roberlo.cz/www/files/file/sizafigukapelekenu.pdfIn PDF document text
    • http://sonsuadogo.org/Images_upload/files/58944455975.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/51174110787.pdfIn PDF document text
    • http://hoadon-dientu.net/images/files/zutukonajonevanado.pdfIn PDF document text
    • http://giaexploring.it/userfiles/files/26524409210.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/84436538119.pdfPDF link annotation
    • https://oferta.lt/i/File/12548240538.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/lunenadiwapigetake.pdfIn PDF document text
    • https://larrialdiak.es/files/galeria/files/luzopozebibiwopadoboves.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1631179905.pdfIn PDF document text
    • http://hoachattn.com/image/files/tebukolaratojewewunadodok.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/lezunelaxajum.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/2msu8t4iduh32cd4v0uoubu786/21323648259.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/simadevokoxuzorix.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/rovefopojepebiv.pdfIn PDF document text
    • http://soeurs-scjboran.fr/soeurs/upload/files/gonej.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/lusivonuti.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/63aa3779880343697aacc468fce9d073/raxipagizezosa.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/vomasonome.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/43444276076.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=bad+adjectives+that+start+with+cPDF 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_off0000df41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 17452 bytes
SHA-256: bdb1624da22f7314496fb5c382eeb156095470331d96d7c91dc6bd39aa262df0
font_02_sfnt_off000123a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A3 10532 bytes
SHA-256: 42f70a9ab97d85b3d068b84ef1e04c821d2db9895b28e460f3ac250e626bd80f