Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb9b7a3809b8b5c6…

MALICIOUS

PDF

77.5 KB Created: 2021-03-23 16:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3eb1a2e83a4a071a4fc79514338e1793 SHA-1: 8c057999cd8bb2cfad99bf93d324e59dbd23fd75 SHA-256: cb9b7a3809b8b5c6171d98901131a63b8806ae676acb27e84eaae713601db390
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://zajinet.ru/strik?utm_term=the+game+changers+fact+check+reddit PDF link annotation
    • http://segipaxi.iblogger.org/sutezef.pdfIn PDF document text
    • http://getsalle.xyz/tejekenovebanavofigerenuvxic.pdfIn PDF document text
    • http://sunugukumota.getenjoyment.net/69968107536.pdfIn PDF document text
    • http://forpost-electrica.ru/biwogobosuguziwomud3q3d.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/kisimujuk/78426781131.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/vawupadorolomagaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e541d8-345c-4221-af6f-b6b05d9a0ae9/difference_between_viral_and_bacterial_infection_in_cbc.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/airtel_postpaid_plans_assam.pdfIn PDF document text
    • http://rinonefor.rf.gd/chopin_mazurkas.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/kenexa_proveit_test_answers_customer_service.pdfIn PDF document text
    • https://291e86d0-b4b7-455e-aeca-30cd05102b29.filesusr.com/ugd/384a46_0c23cf2aa0f74bf88197ed3c8d6c04bc.pdf?index=trueIn PDF document text
    • http://vekabun.myartsonline.com/kilowugonome.pdfIn PDF document text
    • https://a909b8fe-7c6e-4467-a5b6-92e64a2a5b5d.filesusr.com/ugd/65efca_31d9e7f016f04c14ab2b7ad66b634328.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/mufatinotofefedes.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/edexcel_a_level_biology_book_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/870425aa-9976-4cec-8e0f-bef319ae0fff/craftsman_evolv_15_amp_10_in._table_saw_28461_reviews.pdfIn PDF document text
    • http://tirigofov.atwebpages.com/mejefiwisurikoge.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE49 5416 bytes
SHA-256: 454e3e6aedd952e45d08246819fb18ab2603c18e512dc687e8fa794a3dcdf581
font_01_sfnt_off0001008b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008B 12068 bytes
SHA-256: 69e1334efc36cf2694760605d026c901bc301f5fdeb9f4681cb87e81bb15d532

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