Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2eb75c0542c3df5…

MALICIOUS

PDF

312.1 KB Created: 2022-05-17 13:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: a01dcfca7a13ee9c5c9ce8af72713b40 SHA-1: b8ba422d9c58a7575965bc5f0b89e4b1f1e414f5 SHA-256: c2eb75c0542c3df5faa175bc3e2192897133ff446279d9935efe7428ab346a06
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits malicious characteristics, including multiple heuristic firings related to external URI redirection and compromised CMS upload links. The presence of an SEO redirector suggests a phishing lure, likely attempting to trick users into downloading further malicious content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the overall pattern indicates a phishing attempt leveraging a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6852

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://lovig.co.za/XSRYdR1H?utm_term=death+of+a+salesman+pdf+citation+apa+citation+apa PDF link annotation
    • https://lerogufoporix.weebly.com/uploads/1/3/4/8/134885840/5bd5a6.pdfIn PDF document text
    • https://degetopej.weebly.com/uploads/1/3/4/7/134727915/lepofisenigu_bobona.pdfIn PDF document text
    • https://asiahealthcaredentalcentre.com/ckfinder/userfiles/files/kebexepodusefuximize.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621cc6c82755f---jipijoxepekufolezujopi.pdfIn PDF document text
    • http://aardbeienfeesten.nl/uploadimages/files/79604133247.pdfIn PDF document text
    • https://ashasuchikala.com/ckfinder/userfiles/files/5320398212.pdfIn PDF document text
    • https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/kunojovonogipe.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1626195b530294---dadifaxerujego.pdfIn PDF document text
    • https://kizofupotumi.weebly.com/uploads/1/3/4/3/134314367/9146353.pdfIn PDF document text
    • https://jabudotetita.weebly.com/uploads/1/4/1/4/141435846/512701.pdfIn PDF document text
    • https://yam-token.com/business_school/uploads/file/gudowowijoj.pdfIn PDF document text
    • http://akgdsgfly.pretty-match.com/upload/files/buxojudev.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/wipuxotosoxekonovidiwor.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/8b66ac1f482103aa46799b74ee500df2/60590246354.pdfIn PDF document text
    • https://mubazujozij.weebly.com/uploads/1/3/4/7/134705676/6492417.pdfIn PDF document text
    • http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/doperen.pdfIn PDF document text
    • http://elcastillotucentrotextil.com/imagenes/contenido/files/73017461429.pdfIn PDF document text
    • https://www.food-equipment-store.com/fckeditor/uploads/file/54530735575.pdfIn PDF document text
    • http://www.schule.havonix.com/ckfinder/userfiles/files/72902150610.pdfIn PDF document text
    • http://iscelenie.info/files/file/40404143589.pdfIn PDF document text
    • http://vibestedu.com/_UploadFile/Images/file/11779026117.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/5494705.pdfIn PDF document text
    • https://sodumixiseto.weebly.com/uploads/1/3/4/3/134311801/supaxu.pdfIn PDF document text
    • https://komanibinepo.weebly.com/uploads/1/3/4/5/134588578/71c0daaad48c8d8.pdfIn PDF document text
    • https://forevegil.weebly.com/uploads/1/4/1/4/141413148/bcd59e.pdfIn PDF document text
    • http://image.dlib.vn/libedu/news/thuvienquangngai/20220408/file/67439646843.pdfIn PDF document text
    • https://nikovazof.weebly.com/uploads/1/3/2/6/132682709/cb62618b6.pdfIn PDF document text
    • http://wskinbody.com/data/boardData/files/56848662304.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/46186688684.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47263 17588 bytes
SHA-256: e4730f2b7466a4503ab179c9d550fa001a03db446e4a11b0c3a0a4953533ec10
font_01_sfnt_off00049ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49FFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004b813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B813 10784 bytes
SHA-256: 3d0903291cd73e24315392a0b72badae508663675e673c7a24d29bc1b52bd04e

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