Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a5981e36d89d69…

MALICIOUS

PDF

399.0 KB Created: 2021-08-11 20:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 11a44a182af0e93f25bed183b730afa9 SHA-1: 45e6fdff3ede2af19892cdf90574fb227d37f81a SHA-256: d2a5981e36d89d694ee90691a6a6670075043c22b25f144db14a09f5b6f6ec62
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The presence of numerous links pointing to compromised CMS upload storage suggests a tactic to host and distribute malicious payloads. While no scripts were directly extracted, the PDF structure and link farm indicate an attempt to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8004

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ed5f5f681---jipusototojesazorex.pdf In PDF document text
    • https://acryl-bg.com/userfiles/file/14011020609.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160974661f352f---gijesamejefuxuzavoxol.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/18038264516.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/2lvpof061lh3rrcumff15eluio/95316375528.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/3361f520f019a3472c6f103fa7b5d394/3111253732.pdfIn PDF document text
    • https://drlanda.hu/user/file/23642833995.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/0vsvt8au76s0mnkj8377uuem96/99160611239.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/a9a551e637c544bdac465e32638fc748/88329898881.pdfIn PDF document text
    • https://airbays.com/userfiles/file/wuwopa.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f45dcae144---71425489432.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/88377407433.pdfIn PDF document text
    • http://medob.org/SITE/files/editor/file/zevereketozofumafogi.pdfIn PDF document text
    • https://mfdesign.hu/files/file/96562002721.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b4335763301---misuto.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/37547200455.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4491dc057c---9254869646.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/60101211273.pdfIn PDF document text
    • http://smsalumni1971.com/apadmin/uploads/userfiles/files/xodubusojesugozojonutizo.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/47372079335.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud//files/11211469802.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/v742kda0qgkcpedd9v5crqbfq8/85056621190.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/tufaxulasanoziwen.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=drawing+atoms+worksheet+pdf+answer+keyPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B080 18264 bytes
SHA-256: 54965460b9224d558f5688077a8b9d6ceeb96df4b2c22683482b8b91a464983a
font_01_sfnt_off0005e132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E132 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0005f955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F955 11192 bytes
SHA-256: 442be73966c45385e2a1ecb4c0e6b22e825ad938ddc069999e60ab60f7ae2c8d
font_03_sfnt_off00061340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61340 16324 bytes
SHA-256: 4a1e3041f8103a7d4e2e75db273aef650521616ab0c63d2aa14cc79fae449a56

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