Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18cdd96eb73af4b…

MALICIOUS

PDF

78.7 KB Created: 2021-03-23 02:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09611b5dac5d02095f26e2a6c1a94455 SHA-1: 7f40a16e2cf897b26454fc86d276746710cfbb04 SHA-256: c18cdd96eb73af4bd748f935ce7a638cd56bb223b09a8abcc742215707a1ec77
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the PDF structure and embedded URI are sufficient to infer a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://druttle.ru/wix?keyword=how+does+the+canadian+government+affect+our+lives
    • https://cdn-cms.f-static.net/uploads/4454299/normal_60469418a4c3b.pdf
    • https://cdn-cms.f-static.net/uploads/4416787/normal_60521e188631e.pdf
    • https://cdn-cms.f-static.net/uploads/4406228/normal_600ae00095118.pdf
    • https://static.s123-cdn-static.com/uploads/4450351/normal_5fcbfd58dfcf9.pdf
    • https://cdn-cms.f-static.net/uploads/4489848/normal_604950dc91315.pdf
    • http://vawabipoxe.sportsontheweb.net/zatibewoxuxe.pdf
    • http://lugirepapirizo.scienceontheweb.net/ashrae_handbook_hvac_systems_and_equipment_2020.pdf
    • http://manamuposa.getenjoyment.net/63772779441.pdf
    • http://bibopasaxuvibu.mypressonline.com/51328208721.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c2d70b57-dbcf-455a-909e-0e9e98ab9010/zatozekuxiluxogib.pdf
    • https://uploads.strikinglycdn.com/files/fa132f1b-60f4-455d-8841-cd97c660028c/donagitune.pdf
    • https://s3.amazonaws.com/bidurudilidujug/systematic_theology_thiessen.pdf
    • http://giwimev.rf.gd/zarchiver_donate_apk_latest_version.pdf
    • https://uploads.strikinglycdn.com/files/80def6d0-079a-412d-8391-0525824e5bb3/95442844490.pdf
    • https://s3.amazonaws.com/xijilesuzuxo/almond_joy_fun_size_nutrition_information.pdf
    • https://s3.amazonaws.com/zunaduxa/recuperare_messaggi_cancellati_whatsapp_android.pdf
    • https://s3.amazonaws.com/tokudapele/wow_vanilla_tailoring_enchanting_guide.pdf
    • http://bovofekigigewij.rf.gd/javascript_interview_questions_and_answers_for_freshers_download.pdf
    • http://jomopizemiz.onlinewebshop.net/62316161541.pdf
    • https://uploads.strikinglycdn.com/files/74bdf3bf-991d-47f8-9f3c-0c84f00f0a2f/fuzikosafuzujebegufe.pdf
    • https://uploads.strikinglycdn.com/files/61a79763-98ec-4053-a0e6-1605d1183e4f/how_to_put_vtech_cordless_phone_on_hold.pdf
    • https://s3.amazonaws.com/nisoxow/kupixakubewerape.pdf
    • http://teruwizirazi.rf.gd/bunabesiwutotoruxe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f280.bin
c9896a9c887e3be621b2269451931132eefd3b7dced1e1d68fd4e3a176fb1936		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 5548 bytes
font_01_sfnt_off0001054e.bin
3408d0f56fcf44def9b81f6294747568ab6a37aa8656c5bb37827e71cfedacb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1054E 11168 bytes

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