Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d43ae179ae3094a…

MALICIOUS

PDF

168.5 KB Created: 2021-03-24 17:07:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1faf4047a65a229f0f24685d6d540b4e SHA-1: d9fd3d7215d5dce912e694fe0e11b987e9f7a1f8 SHA-256: 8d43ae179ae3094ae6376b3a4a43885e2037d527d0d762bb7e86f5d1daa29ae5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a malicious domain, disguised as a search result for educational content. ClamAV and ML classifiers flagged this file as malicious, specifically as a phishing trojan. The presence of external URIs and the overall detection suggest a phishing attempt to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=genki+workbook+answer+key+second+edition+pdf
    • https://nisudine.weebly.com/uploads/1/3/1/4/131454656/9156382.pdf
    • https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/c5173e8.pdf
    • https://likufugusatu.weebly.com/uploads/1/3/1/4/131406708/7015381.pdf
    • https://cdn-cms.f-static.net/uploads/4387939/normal_600d244d39860.pdf
    • https://cdn-cms.f-static.net/uploads/4376088/normal_602c856858d41.pdf
    • https://torimavilok.weebly.com/uploads/1/3/5/9/135984964/9374208.pdf
    • https://static.s123-cdn-static.com/uploads/4428039/normal_6000c0cbc713d.pdf
    • https://jonurimexiv.weebly.com/uploads/1/3/4/3/134321783/juzawavulosaw.pdf
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/koderavuxub.pdf
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/tapufakode.pdf
    • https://romarifekaxa.weebly.com/uploads/1/3/2/6/132683260/jezowubororuj.pdf
    • https://static.s123-cdn-static.com/uploads/4468255/normal_5feefe920cb4f.pdf
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/wemidus.pdf
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/604b9889154fb7.pdf
    • https://jumugegapu.weebly.com/uploads/1/3/0/8/130814907/284324.pdf
    • https://xewulatejema.weebly.com/uploads/1/3/5/3/135345986/01831151.pdf
    • https://bagobizofenagex.weebly.com/uploads/1/3/4/7/134767931/ca24e7c.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wanalovum/vumefugedigibujetutap.pdf
    • https://s3.amazonaws.com/zetubakuz/siretexesawavotekajefona.pdf
    • https://s3.amazonaws.com/lejivugeleguwod/47789597594.pdf
    • https://s3.amazonaws.com/tetofamuxulil/rti_application_form_punjab.pdf
    • https://uploads.strikinglycdn.com/files/408858a3-d8a5-4f2e-8e2d-584572a9586a/me_after_you_book_review.pdf
    • https://uploads.strikinglycdn.com/files/8b44eec3-8427-46db-ad9e-03f976b5d716/23584365734.pdf
    • https://uploads.strikinglycdn.com/files/baf156a8-b560-482c-91b5-465c04579ea8/jibufitipujesoj.pdf
    • https://uploads.strikinglycdn.com/files/09875513-cb14-4e67-bb94-57eed84dead3/41143128636.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012866.bin
da76b397fed6c5a188d770d82e1e9bf4d8740edc86973fcfe71727f1bbe0a25e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12866 97156 bytes
font_01_sfnt_off000249a5.bin
1db75d90ae4e5b7cf7dbb76b39ec340aa2af81009f3a905eb2904ee0cf40d43b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249A5 3408 bytes
font_02_sfnt_off00025751.bin
ab964717d89a686db5b8eef9d15d2323f0bb8524db73059b98e44e9507cfbbd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25751 5544 bytes
font_03_sfnt_off00026a56.bin
3b67eacd2604f8f803bfc0798b86d7b43af74d5f630ebd3189687ccf92f1f303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26A56 11528 bytes

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