Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bb4a4a7f472ae1…

MALICIOUS

PDF

82.5 KB Created: 2021-04-21 12:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f6e11357ce5f40ab5b30d49a584ce19d SHA-1: 9a26a20456df723691fb5aaa8f08e676ddb3597a SHA-256: 74bb4a4a7f472ae1e138332bf9d1f8a119c1be59a59d0a0343ea2b4ad3185049
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 0.9993

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://baarspo.ru/strik?utm_term=is+there+a+sequel+to+me+before+you+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5fc85f84489af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500667/normal_5fe4285dd8266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384307/normal_60058a44e817f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_606533b48e642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_6033fa5106f60.pdfIn PDF document text
    • http://mamafiposorugul.sportsontheweb.net/do_all_leaders_have_power.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471985/normal_5fe4e28d67aec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_6025069271a34.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/98260255000.pdfIn PDF document text
    • http://zugobopepoj.sportsontheweb.net/aircraft_engine_controls_design_system_analysis_and_health_monitoring.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474720/normal_600c79229c8de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377128/normal_5fcea131c12b2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wujagenak.atwebpages.com/word_association_test_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4db23dd-56a4-4c41-b3a2-ba9cf45562ec/review_autel_maxicheck_pro.pdfIn PDF document text
    • http://gixejemazob.myartsonline.com/liduvodurosazepovajodo.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/gana_sudhakar_album_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/80498178831.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/nomime.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/parto_m_affretto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ab4d3e-9d40-4549-83e5-b1daf054d6b0/quick_study_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/21785318240.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/vominuvidojenuliwigubef.pdfIn PDF document text
    • http://fazovalekotevo.onlinewebshop.net/sulanejusamiladodiwasonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19e6131-fec2-4e2e-805d-b46c6b884af3/jusuga.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_off00010487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10487 5376 bytes
SHA-256: aee4b9a60c250c5aea51b5bf7197592e19e762a001eeec9feb8185f90d06146a
font_01_sfnt_off000116b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B3 10628 bytes
SHA-256: fbd52966495649a9381ff9224879da713de5890ec70c31e78af2ba04879537ad

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