Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed42eb7119c17dc1…

MALICIOUS

PDF

69.2 KB Created: 2021-09-28 07:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: dafd7578210f9de7b43f69af0369d240 SHA-1: 1667d763829b4b1f744e96a730e17a4479036829 SHA-256: ed42eb7119c17dc1bd85a8e542cead58abe220c500778bf661c31a0481f2632b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised CMS uploads or disposable hosting. The heuristic 'PDF_IMAGE_LURE' indicates it's likely an image-based document designed to trick users into clicking a hidden action trigger, which would lead to one of the listed URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://medvor.ru/uplcv?utm_term=nokia+lumia+520+xda PDF link annotation
    • https://soi.icami.mx/ckfinder/userfiles/files/xakuvidixiremeweri.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16138332305688---sazuxuvasekupejadiru.pdfIn PDF document text
    • https://comfort8889.com/upload/files/jinasofegebokajuliri.pdfIn PDF document text
    • https://proxus.nl/file/94018696708.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/dekiwawisetetinabaj.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/em628unl48q9ldbrkk6nfb3mkd/tijakisewugike.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/labekitefabezidonowelinox.pdfIn PDF document text
    • http://halaljones.com/uploads/files/71033409358.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614eda94ac1d5---53945958196.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/68572725152.pdfIn PDF document text
    • https://impulsa.mantareys.net/uploads/plantillas/files/80254361331.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c27f133622---jixebagifixawuzuk.pdfIn PDF document text
    • https://baglab.pl/galeria/file/zigixiro.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/3784c8aba2e50fc165ce96d90fdf77c9/83678356991.pdfIn PDF document text
    • https://giltmorestukko.hu/ckfinder/userfiles/files/25117557464.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161495379ae44e---9173434611.pdfIn PDF document text
    • https://hoavily.com/uploads/files/49902963630.pdfIn PDF document text
    • https://fitness-base.tw/uploads/files/202109251948203754.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/48475558695.pdfIn PDF document text
    • https://bibonatura.hu/ckfinder/userfiles/files/nizal.pdfIn PDF document text
    • https://xeroxexpres.cz/userfiles/file/pedojivureno.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135cb6bb78ae---menoragemabavisepid.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/vajonipevixopomodusikiku.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/7ac4a6d23a888ff7a901dc40ca51c815/bomuwolesezatopawalewuf.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1614cbede0b29d---69860386464.pdfIn PDF document text
    • http://kehlux.lu/userfiles/files/xiwivupupakelepit.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lenarovid.pdfIn PDF document text
    • 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_off0000b3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E7 14208 bytes
SHA-256: e4cb80bdf765da30d2a3e252a3df8b90b9530bd2a78c1ceda4362ed57c14b16f
font_01_sfnt_off0000d73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73E 10452 bytes
SHA-256: 5bf535c4a1c92121790f376d9b81534d960cd86d95f5c22daf2ed721ecbf9b00
font_02_sfnt_off0000ef07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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