Malicious PDF — malware analysis report

Static analysis result for SHA-256 054649dc28c9190a…

MALICIOUS

PDF

85.4 KB Created: 2021-04-01 11:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: c67f4d15fb59f6cadf0ca2088a73d7c5 SHA-1: 2149abaa2cc2cc0f180390bff45b7b8fda0105f4 SHA-256: 054649dc28c9190aa56485d599fef69c23921e0a061440c3d82020e1c06c5145
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it is likely a phishing or trojan attempt. The document body, though heavily obfuscated, contains text related to 'emergency threat plans' and the authoring application suggests it was generated by wkhtmltopdf. A key finding is the embedded URL pointing to 'leonvi.ru', which is likely the destination for the phishing attempt.

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://leonvi.ru/strik?utm_term=tipos+de+amenazas+plan+de+emergencia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381094/normal_605f53dbb6e8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482847/normal_5feb43f2b4ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369907/normal_602814a984877.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486552/normal_5fde511870317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501380/normal_601e21463922c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_6048d22868fe5.pdfIn PDF document text
    • http://tibojisitixuno.22web.org/odisha_news_by_odia_reporter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447916/normal_604dd380a3a26.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/bce9fc41-c3b5-44a3-a511-615e8018b35d/control_systems_engineering_6th_edition_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b5e049-4ac5-484e-91ee-702aebc4cb50/explain_the_advantages_of_child_centered_approach_to_teaching_and_learning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6576dc6-35e3-47ee-ba15-d8b1f6dabb9b/jordan_belfort_wiki_fr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd44a9ef-8d66-439f-b81d-8cf9bf68ddd2/how_to_connect_xfinity_dvr_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09633efc-4c25-45f9-aa20-f5aad29c5864/safety_first_infant_car_seat_replacement_parts.pdfIn PDF document text
    • http://niwerujegip.epizy.com/how_much_do_field_irrigation_systems_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93158d1e-0077-4073-82c0-e846fd6f528e/13902669403.pdfIn PDF document text
    • http://pasezisa.rf.gd/dataxadeguwumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0593fa05-8054-4641-9f60-5bb5a1d7e0c1/what_does_seeing_the_number_800_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ade3064b-087a-437f-9ce4-c5c7865a3b62/59432469292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00f80c16-a52e-42b4-bef4-026421922b32/how_to_exchange_sodastream_at_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ed18f4-c1af-4249-bc7f-e4dd917d1725/how_to_use_a_tefal_deep_fryer.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_off00010eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFF 5392 bytes
SHA-256: 187e92a08bf6a7c06a805c0287a4053be50241207d261bfd6aaeeb4e4d080491
font_01_sfnt_off00012145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12145 11572 bytes
SHA-256: f9147f5f83c464dcc14b9fe71216eda29e1e62ec305541bc885d15365d91b7b0

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