Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb73e68373658f4…

MALICIOUS

PDF

80.4 KB Created: 2021-02-07 22:09:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0e0aa49458d2eeab78415c9cef70c904 SHA-1: 57cffecf6c0a130a027848e8d0913fc9a58468ca SHA-256: 7cb73e68373658f4887336cc631facfcf802354f60135d222d35c22c24f19f40
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'seumenha.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to 'Abirami anthathi lyrics in tamil pdf', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=abirami%20anthathi%20lyrics%20in%20tamil%20pdf PDF link annotation
    • https://cdn.sqhk.co/zotofoza/g61jjhf/airplane_movie_meme_generator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421612/normal_5fe2b90db01d4.pdfIn PDF document text
    • http://dwatches.site/fukulawubdh5df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388283/normal_5fc6862cccfde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485718/normal_600829d79cc79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_601d941b72582.pdfIn PDF document text
    • http://devlp.club/ch2o2_molecular_geometry5u9k9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382962/normal_5fe0b4a763995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_601da3c7e5265.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_6001a82776d47.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/7jdqiaR/smart_data_switch_trials.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/ahcuhim/roller_ball_massager_with_handle.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relumewamamit.rf.gd/25866015534.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/dryer_sheet_down_jacket.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/ps4_emulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/35125862314.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE0 5628 bytes
SHA-256: c59da7880ae7dcca1d8ac299ba6193ce9526baf445f6f5c282344bfd017e6971
font_01_sfnt_off000111df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DF 10088 bytes
SHA-256: 75a2b7c3c2c06b201aa0a009fdd9a185cc6f366206f0174471818223c2920283

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