Malicious PDF — malware analysis report

Static analysis result for SHA-256 2684f73ef7dd2221…

MALICIOUS

PDF

72.7 KB Created: 2021-05-16 05:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 181bf3039a44fa48288406445c8e2338 SHA-1: 51903c059f461d14b1161e8fdbebf0fdacdfd4ba SHA-256: 2684f73ef7dd2221704c4bbd8f90bfe47cf16e85abd6cdf4dee2645ca7e9acf7
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://jacksth.ru/strik?utm_term=how+to+set+a+power+timer PDF link annotation
    • http://rajukilodagoje.mygamesonline.org/a_christmas_carol_movie_cast_1938.pdfIn PDF document text
    • http://ninijefaligogi.mygamesonline.org/34885482951.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d0b2bd-2e76-4996-a04a-266dd65a0bbd/87970995001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da24781-14f3-4f59-a78a-02d35c637cdc/35429081678.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/naniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfb21d2-21be-417c-9209-521497074180/xudapageguwoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8754ca2c-64ca-4ee0-b642-f9a245c6d852/java_8_stream_api_list.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/87083761657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/189bc18e-0978-43a5-99b3-6956e180cb2e/47330888061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5bbd37e-7220-49c1-8517-e6316356daad/is_technical_analysis_worth_it.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/pandigital_tablet_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e7992d-75b1-4169-90d4-1a54a1126fe6/17438922477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39cfaf3b-82c9-46cb-a4e9-9c96e644d633/pretty_little_liars_cast_season_4_arias_new_boyfriend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7762e06a-6d3b-445a-b6f5-eeb1897ebafa/58786922576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebb60c93-f2c9-4964-b0d1-fa8a7158b735/justine_marquis_de_sade_english_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffe41f0b-6c67-41e4-af0e-7eecf75ae1a2/65623939690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53cbe271-fe08-4ee0-a9bd-cded3cfdcf2b/95815232436.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_off0000e19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19C 4988 bytes
SHA-256: 9d28e50673e1e1af0ddee1942459b52529982cd006bca57de58e78bf09448cef
font_01_sfnt_off0000f28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28B 10420 bytes
SHA-256: 454e79c1fec922a50364def97d7e514ee471ab2b999b4dfb196c10ac569dbefd

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