Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb908a984d82e0e…

MALICIOUS

PDF

71.7 KB Created: 2021-01-29 02:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e90248a222a24e565ca3dfcdbf15a47a SHA-1: 93f24de729a367de39e58853084ea999324aeee0 SHA-256: 3bb908a984d82e0eb5575eb00868c4eecc3dbab89065bdf2ec36a2c60e7fa741
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/wb?keyword=ranked%20voting%20system%20vs%20electoral%20college PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5fe6bac8ec37f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5fcb22754594f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5fe9f22e64d12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fefb2c197f8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_5fcca8e471036.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419818/normal_5ff6807018b1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371790/normal_6002d297cd082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458622/normal_5fdc579fec190.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/luropi/new_army_uniforms_pinks_and_greens.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/wojuvijoririkeke.pdfIn PDF document text
    • http://gevewodex.epizy.com/67197975735.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/naacp_president_to_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/zufukazogopexivenelujaj.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/cheap_thrills_pitch_perfect_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/tasazo.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/ios_13_beta_iphone_8.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/seridexarukewuv.pdfIn PDF document text
    • http://vonanovab.epizy.com/16673875218.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/auditor_general_report_2014_ghana.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_off0000dafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFE 5492 bytes
SHA-256: a8baae0125e736a157f18f76e7b68fae93f01efa99b767e10296af05d131acd6
font_01_sfnt_off0000edaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAF 10644 bytes
SHA-256: e9012acf5ee5e588686cd204dc37691a2cca4bbd6439d7d095d606085705a2db

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