Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0901fd246e7607…

MALICIOUS

PDF

68.1 KB Created: 2021-01-14 12:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a41801a67ba6fe6482f2824a828a9a3a SHA-1: 30d1d14aaaa61c03eb3ec7254befc08b3b1a7f82 SHA-256: 1d0901fd246e760764ae6fd5dce5297d8233d25758a583959750a09795793374
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to an 'endocrine system worksheet answer key'. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

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://traffset.ru/aws?utm_term=the+human+endocrine+system+worksheet+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418178/normal_5fa0f9003cbd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5f9d8d2c1d5b8.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/IjbNgjb/dr_vivek_bindra_net_worth_2019.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/rivelebetevasik_gabotuzoxuweset_putujapopigivu_widekikotenaxev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5fa5bc1c1dd4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_5fc141584efc4.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/g3cheOD/soccer_heads_la_liga_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/jbgguhb/waraj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450356/normal_5fc13ed063a72.pdfIn PDF document text
    • https://cdn.sqhk.co/xizowabik/miaggXA/super_placar_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/desiruzag/mshjohc/jetaxukozufapifejuwabevu.pdfIn PDF document text
    • https://site-1176043.mozfiles.com/files/1176043/ccure_9000_server_installation_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebisop/digamal.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/gmat_unofficial_score_report.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_off0000c8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DF 5356 bytes
SHA-256: ec5f7ce7226df714872104fa1f82cc5afb8d01e070046cc8e8c6b17ae0f374e6
font_01_sfnt_off0000daf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 11896 bytes
SHA-256: 96ddbe47e452855720425c77550628bbd160e3eeb96751cf11f67661d54383cf

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