Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc1c0d0bfb2498d…

MALICIOUS

PDF

63.3 KB Created: 2020-11-24 06:36:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91c4d0d5bf071096297d832e8d997587 SHA-1: 1efb84552febfb7f9d992c4707df1a2547831091 SHA-256: fdc1c0d0bfb2498dac8ab44c91bdac30f81061ba552b51bb82b110be38175920
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains text suggesting it is a lure related to 'Billy graham books for sale', which points to a phishing or social engineering attack. The embedded URL 'https://trafficel.ru/123?utm_term=billy+graham+books+for+sale' is likely the destination for this lure, aiming to redirect the user to a malicious site.

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://trafficel.ru/123?utm_term=billy+graham+books+for+sale
    • https://cdn-cms.f-static.net/uploads/4404984/normal_5fa6d14c93ec2.pdf
    • https://cdn-cms.f-static.net/uploads/4419191/normal_5f9ddd0c85473.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jiwisigetizoxif/cardiologia_guadalajara_7.pdf
    • https://s3.amazonaws.com/mivokozibu/words_with_the_root_super_in_it.pdf
    • https://s3.amazonaws.com/resisuna/online_photoshop_app.pdf
    • https://s3.amazonaws.com/fikuvine/happy_birthday_to_you_lyrics.pdf
    • https://s3.amazonaws.com/dedinavesute/counting_on_practice_worksheets.pdf
    • https://s3.amazonaws.com/gajabedafot/34487634510.pdf
    • https://s3.amazonaws.com/leteraxewe/yahoo_mail_app_android_how_to_change_password.pdf
    • https://s3.amazonaws.com/wonoti/54049180527.pdf
    • https://s3.amazonaws.com/vuxalirudidel/31783641565.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_off0000b8d8.bin
4f0ffa83d46e9f5e6ceee1c04b03458667e96ae68fd7170839ce13573b8a9067		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D8 5536 bytes
font_01_sfnt_off0000cb8e.bin
4d4f6dd9fa985650c5fb2cb491f2ad6ba6bff0168224c9383793088049895cd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8E 11752 bytes

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