Malicious PDF — malware analysis report

Static analysis result for SHA-256 0368b172c9f44821…

MALICIOUS

PDF

87.9 KB Created: 2021-03-02 20:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6ba4c06c12acff39eb6efbe5dc48f12f SHA-1: a49be09d8c96db94f3c00ba4996ab8100247cf76 SHA-256: 0368b172c9f44821e8306febe4f524fa75cb6a8735fd5028be8e81360be0bdc7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'jottigo.ru', which is likely used for phishing or to download a secondary payload. The document body, though partially corrupted, suggests a lure related to making simple syrup, a common tactic for disguising malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=how+to+make+simple+simple+syrup PDF link annotation
    • http://repair-kompov.ru/ratibwqq87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458144/normal_5ff639da9b744.pdfIn PDF document text
    • http://newberginvestmentproperty.com/iap_immunization_schedule_2020_downloaddx5cm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481291/normal_6031489a37a3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489440/normal_600e5a0a80a59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465000/normal_5ffeb7ef0663d.pdfIn PDF document text
    • http://libumuzu.22web.org/what_was_the_progressive_era_characterized_by.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379718/normal_6038be8eb7e49.pdfIn PDF document text
    • http://livethailand.fun/34294524954658po.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501208/normal_5fcf8c4056bd1.pdfIn PDF document text
    • http://tivulaxovena.22web.org/palabras_agudas_llanas_esdrjulas_y_sobreesdrjulas_ejemplos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tokatefozude/jodakupepaponexax.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/ravomege.pdfIn PDF document text
    • http://sufapanizesemot.epizy.com/avast_android_free_licence_key.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/estimating_in_building_construction_8th_edition_answers.pdfIn PDF document text
    • http://beranaja.epizy.com/the_lion_the_witch_and_the_wardrobe_chapters_5-8_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/cash_flow_fund_flow_statement_excel_format.pdfIn PDF document text
    • http://zafokofebub.epizy.com/99288804868.pdfIn PDF document text
    • http://sezajurul.epizy.com/certificate_of_participation_template_editable_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/fofodanunuvubofi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD4 4960 bytes
SHA-256: 2e383251ff62eb6e622d708916bfffec42c375610a21cd845bf9ec346cf69de6
font_01_sfnt_off00011eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECA 11012 bytes
SHA-256: e9ce7b6a7fae7f114b3fc3f3cd5078b128fb6e90d17b85abff6b9dc41e00e34e
font_02_sfnt_off000143bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143BD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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