Malicious PDF — malware analysis report

Static analysis result for SHA-256 308be625c77b9cd5…

MALICIOUS

PDF

77.3 KB Created: 2021-02-25 22:29:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 30322b4d8b00a1725e011d693b03e380 SHA-1: 569106c34a49009b201327bab8de6596974ea20f SHA-256: 308be625c77b9cd59a29018f414f4c9a33f6e52b7521df8516512bbdaf7853c7
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Focusrite scarlett solo driver win 10', suggesting a lure to trick users into downloading a malicious file disguised as a driver. The presence of multiple unknown reputation URLs indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=focusrite+scarlett+solo+driver+win+10 PDF link annotation
    • https://cdn.sqhk.co/fusuwudofal/eiaFhj7/zutajegilerux.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/6hghffF/merchant_of_venice_quotes_portia_mercy.pdfIn PDF document text
    • http://fafaviga.iblogger.org/fannie_mae_appraisal_guidelines_neighborhood.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/difhagc/jadijajumaxupokusewebo.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/c9HijvX/49737306665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411501/normal_5fd78c08260a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_600f0790d3607.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/YsBiihi/hashtags_to_use_on_instagram_for_likes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lumixi/guided_tours_london_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/27596346970.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/mujalu.pdfIn PDF document text
    • http://xadapokudenez.rf.gd/jupovagowonalofufovumot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E3 5116 bytes
SHA-256: af5d754d5b15489ab77c8e2ff9ef8047f664159b87114d8b9f8d978b9d153751
font_01_sfnt_off0000f468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF468 11272 bytes
SHA-256: 503bccca34f8b6bdfb8e80ec965b54de0a4982e70995d24e6d2d35e85b8a0997
font_02_sfnt_off00011a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A13 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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