Malicious PDF — malware analysis report

Static analysis result for SHA-256 e992ea3e5266f0ed…

MALICIOUS

PDF

93.3 KB Created: 2021-02-25 01:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0cc1a624152915c46b80b43c955361d8 SHA-1: 03b658358c2df44b993257c8e09fc6fe39e9387c SHA-256: e992ea3e5266f0eda6b399318cd1a85f4cf2d367db28472d61ebfd732cad23c8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically appearing as a search result for a popular book series. This suggests a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wb?keyword=how%20many%20books%20are%20there%20in%20the%20diary%20of%20a%20wimpy%20kid%20collection PDF link annotation
    • https://makumanufomogo.weebly.com/uploads/1/3/0/8/130874647/mejoweb.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/hcBgdiu/30469371841.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/wenoputelepunuremugu.pdfIn PDF document text
    • https://ketevifut.weebly.com/uploads/1/3/1/4/131453005/gatibubopake-zukaleloludaxen.pdfIn PDF document text
    • https://cdn.sqhk.co/wasusoguba/ajcgh6e/printable_mlb_playoff_bracket_2020_16_teams.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/y6Yiihg/golf_clash_golden_shot.pdfIn PDF document text
    • http://nulonelam.66ghz.com/appsense_training.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/is_it_too_late_to_plant_tomatoes_in_florida.pdfIn PDF document text
    • https://tejukikefuxod.weebly.com/uploads/1/3/4/7/134703803/nokenugesu.pdfIn PDF document text
    • https://gopogusefivow.weebly.com/uploads/1/3/1/4/131406686/nilosuta-tuvawowegowine.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/is_harry_potter_cursed_child_worth_it.pdfIn PDF document text
    • https://cdn.sqhk.co/gizafimode/hmam0pT/nuvuvarexelu.pdfIn PDF document text
    • https://bumilumijoxaxuv.weebly.com/uploads/1/3/4/4/134497753/rosar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kazigolukujo.epizy.com/diffraction_grating_lab_report.pdfIn PDF document text
    • http://suzawelo.epizy.com/lejowumevumasejidupoke.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/jobigeragatomunubelalaj.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/bhd_currency_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/king_edward_memorial_hospital_antenatal_guidelines.pdfIn PDF document text
    • http://tizivedimusos.epizy.com/disaster_management_plan_template.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/86342811411.pdfIn PDF document text
    • http://sovezogodum.rf.gd/tofamipaloxiworomefetenog.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/high_school_makerspace_tools_and_materials_guide.pdfIn PDF document text
    • http://jexoxitisujoj.rf.gd/9641412575.pdfIn PDF document text
    • http://delenujafoxa.rf.gd/37965543024.pdfIn PDF document text
    • http://fexabowowerol.epizy.com/judux.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_off00012ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA3 5756 bytes
SHA-256: 0186ba13de4bdb04ca1f9a4c72a3ae56a365c0cefc3680e6758fab910b5e9863
font_01_sfnt_off00014023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14023 11412 bytes
SHA-256: d46c4313e28997446f582f557575908ffccc62cf40be803d3f8f741cafddcb8e

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