Malicious PDF — malware analysis report

Static analysis result for SHA-256 c537e2d03d8d4c67…

MALICIOUS

PDF

76.9 KB Created: 2021-03-17 23:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aa52933ae3f456fca3d357687fe1dd4 SHA-1: eb734189104f2a2a14d265f276bfd91a6801d216 SHA-256: c537e2d03d8d4c6746c0d8fbf9ec0c35510f29192f301b1ff4e562177bd85a40
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://botokaw.ru/aws?utm_term=new+england+style+beef+tips', which is likely the malicious destination. The document body appears to be obfuscated or corrupted, but the presence of external URIs and the strong heuristic signals indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/aws?utm_term=new+england+style+beef+tips
    • https://vorapitejure.weebly.com/uploads/1/3/4/6/134605364/wibevud.pdf
    • https://gilepinewuje.weebly.com/uploads/1/3/4/0/134096317/vodinafevese.pdf
    • https://cdn.sqhk.co/dusivubeleza/jJ93ab9/79260369821.pdf
    • https://cdn.sqhk.co/vigesiji/iwQhbid/zombie_adventure_games.pdf
    • http://on24-system.club/jetaridodizozatumokiwcd4j.pdf
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/31bb5864d.pdf
    • http://rimisirotox.iblogger.org/47870490144.pdf
    • https://cdn.sqhk.co/muwitajo/Tihilxk/dazalovumakiv.pdf
    • https://pemogele.weebly.com/uploads/1/3/5/3/135324676/pusev-rifoman.pdf
    • https://cdn.sqhk.co/nuzitomizaj/hjcihfk/59664079248.pdf
    • http://devgame.design/povuw02g52.pdf
    • http://frasqen.online/games_and_activities_for_teaching_englishi7dtg.pdf
    • http://luxshop21.site/bobcat_s175_user_guideyq7kb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pakebixulo.epizy.com/graduation_certificate_template_images.pdf
    • https://s3.amazonaws.com/kawotexulozax/nouns_worksheet_grade_1.pdf
    • https://uploads.strikinglycdn.com/files/49aa04c9-ae48-4845-ab01-a1a1bc1b68af/37440086091.pdf
    • https://uploads.strikinglycdn.com/files/6b4e3eee-d0fc-441b-89d0-6a1c800b063e/36838281476.pdf
    • http://xikisefux.epizy.com/93932866060.pdf
    • https://uploads.strikinglycdn.com/files/bc6d0f0b-3a41-4e97-a9da-fff690d72446/bajojureposo.pdf
    • http://kusugafunerepo.rf.gd/arabic_story_books_with_english_translation.pdf
    • https://uploads.strikinglycdn.com/files/24ce4762-28e0-4b98-bb8f-9741973267d3/malofetakedax.pdf
    • https://s3.amazonaws.com/wizidimawag/anjali_anjali_pushpanjali_telugu_song_free.pdf
    • https://uploads.strikinglycdn.com/files/171e0421-bb2f-4f3b-b62b-81581f8bf7cb/18289202651.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_off0000ec3f.bin
841e95178546bba166c0cf038789cf7d323f7c5fa6ee05fe89b317f5f0db46d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3F 5416 bytes
font_01_sfnt_off0000fee3.bin
6eaaf781e249c37dfd727af91ceff7dea12b36b099e27a2c1acc08bbb808dbbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE3 11272 bytes

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