Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b3cad25713f000…

MALICIOUS

PDF

79.0 KB Created: 2021-03-24 19:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b07ff06b5ccd3cfc049cb222d87e40a4 SHA-1: ddd93e39fa6eea7f5712f1bcc8b798a555740ac1 SHA-256: 97b3cad25713f0009117181403215938574d8c4057bae88755378badd8ab7426
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains references to 'abyssal fish information' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/123?utm_term=abyssal+fish+information
    • https://static.s123-cdn-static.com/uploads/4495849/normal_5fddb4f42696c.pdf
    • https://cdn-cms.f-static.net/uploads/4388421/normal_600cb5b13f38b.pdf
    • http://sifaritube.sportsontheweb.net/wixaxufitoxulewew.pdf
    • https://temavemata.weebly.com/uploads/1/3/4/6/134611183/734e35ef7d6190.pdf
    • https://cdn-cms.f-static.net/uploads/4478926/normal_5fd2cb52901e3.pdf
    • https://pibazamigudixo.weebly.com/uploads/1/3/4/0/134000525/2908928.pdf
    • https://rujikanonige.weebly.com/uploads/1/3/1/8/131872107/neson.pdf
    • http://sovetnik53.ru/29889910078ftok0.pdf
    • https://senidexug.weebly.com/uploads/1/3/0/7/130775540/5616161.pdf
    • https://cdn-cms.f-static.net/uploads/4370273/normal_603c0294782a5.pdf
    • http://lasiwefomibew.sportsontheweb.net/zinc_plating_process.pdf
    • http://rusherx.studio/lotezonipijicvn.pdf
    • http://banki-internetowe.com/ldg_it-100_tuner_for_sale90lxj.pdf
    • http://femuxeririta.mygamesonline.org/seduke.pdf
    • http://aycotoro6.xyz/milk_and_honey_book_free_downloaddq2f2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ac29b6de-c190-4ff4-80d2-c0591128a7e2/lirulifefil.pdf
    • https://uploads.strikinglycdn.com/files/7a789028-6e7f-4c6a-9e53-0a55f2c0c4f0/pemaroxisafeligozuzigi.pdf
    • http://gulagopafed.onlinewebshop.net/sunibapofovera.pdf
    • https://uploads.strikinglycdn.com/files/c91bfd0e-68a0-4b3c-9f34-6d3d4c95bed2/96004349715.pdf
    • https://uploads.strikinglycdn.com/files/9e3baf2b-ffa2-485d-85c1-ed83460112b5/jokuki.pdf
    • https://uploads.strikinglycdn.com/files/8dfd10a2-296c-4168-91f3-d418c895d4cb/triangle_offense_management_company.pdf
    • https://uploads.strikinglycdn.com/files/e859393d-00bc-422e-8ac8-734c2551e21a/who_owns_newsmax_tv_show.pdf
    • https://uploads.strikinglycdn.com/files/4cc5a384-beda-4a91-8f6a-0d08417b7a90/viziwilapufuxomiv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8fe.bin
0ab2e36f5633d42cc6cedeea45c622ca6806af78af22fe8a333ff6dd90e2aac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FE 5236 bytes
font_01_sfnt_off00010aab.bin
373145904cd1ad017fa992cdc041296255d138ba079e6c0fae0c805f6b57f2d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAB 10380 bytes

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