Malicious PDF — malware analysis report

Static analysis result for SHA-256 4459de1aa47708d1…

MALICIOUS

PDF

106.1 KB Created: 2021-09-07 11:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: 04d536055ed5fd18414c7b742e289151 SHA-1: cfe9e8d0155b1bcad01101cae8c1360ff138cef4 SHA-256: 4459de1aa47708d1b87212d8c439aa888c334403a05fb85bcfb787ad7531601e
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9687

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fe5c93a8ce4---samegikowajozo.pdf In PDF document text
    • http://kiuanai.com/userfiles/file/gimowokimuxul.pdfIn PDF document text
    • http://cambridgekapurthala.com/damana/userfiles/file/rizazuvar.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/nopovevi.pdfIn PDF document text
    • http://jwconsult2005.com/file_media/file_image/file/83087976485.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ed8f184c9---xilotegurakugibepepitove.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/fixisebagavaruze.pdfIn PDF document text
    • https://mimpishiosatu.com/contents//files/38605926609.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/5881525432.pdfIn PDF document text
    • http://maility.pl_adresuserfiles/file/jozunobeturafutuwud.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/d57q0rmaoa4ssqnc70pgj2ar9t/toxepokomixej.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/17334942288.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/30082179141.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/803d63cd54ea4f52e61282226dbf72b0/58451704145.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/fichiers/6955563290.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ad51ca26249---92073794337.pdfIn PDF document text
    • http://dakmet.pl/upload/damezib.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/3mk6pvqorqvfeflue346unvcse/16507226466.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/7893e0feb3b30e96c90990a37953afed/5085692315.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210824221354.pdfIn PDF document text
    • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/94271218038.pdfIn PDF document text
    • http://luingpyrex.cz/foto/Image/file/fimofafufepujavozupuzez.pdfIn PDF document text
    • http://santabruna.cl/upload/file/55814139333.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076251b71f37---binodepiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=manual+de+servi%C3%A7o+honda+cbx+750PDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10567 25464 bytes
SHA-256: ed85c74fbb8316aed7a7c8f86e7c3f17013816fe2531e640a862492a24bc156c
font_01_sfnt_off00014496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14496 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CA7 16588 bytes
SHA-256: 82558c48748f6710c3b1c0387ec74a69aaaf08acf0ebdae2a832fdca42113eda
font_03_sfnt_off00017420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17420 11276 bytes
SHA-256: 035f652a9bd1a07b742525b8faac04bd7077720c57945fee30932d59aeacf2ac
font_04_sfnt_off00018e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E3C 2076 bytes
SHA-256: 3cc8a62c510cf61b6e0b78164b43afbfa54ec56cb882c6a341d2014e17d809fb