Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3027124e7a11320…

MALICIOUS

PDF

77.6 KB Created: 2021-03-26 00:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eccfddd36e522c6f8a56c7d573e8e65a SHA-1: 185a6a7bc8949ccd5dca962d27b286cf7cc26ab8 SHA-256: c3027124e7a11320be600b9139305516711218b1a62e2991803e4f05820258a6
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure related to awards or reviews, directing users to a suspicious URL. No scripts were extracted, but the presence of embedded URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/award?keyword=barbudos+sujos+e+fatigados+pdf
    • http://zuraleres.mywebcommunity.org/carving_ski_technique.pdf
    • http://rowaxamapitowej.getenjoyment.net/48873931009.pdf
    • http://gakawisogafuga.mygamesonline.org/bose_acoustimass_10_iii_review.pdf
    • https://cdn.sqhk.co/titusegik/DhiiaEl/60691375058.pdf
    • http://dalidusiz.mywebcommunity.org/chaucer_the_pardoner_s_tale.pdf
    • http://gapagal.mywebcommunity.org/6787143846.pdf
    • http://goproonly.com/4501884118617uqj.pdf
    • http://ideal-it.fun/28486855892g4aqv.pdf
    • http://logoped-samara.ru/51619888331ajmn1.pdf
    • http://sberbank.services/4914829893fikq9.pdf
    • http://geforiro.scienceontheweb.net/bodies_by_rachel_guide.pdf
    • https://cdn.sqhk.co/zowonefaso/gZjcjg2/god_of_war_sounds_download.pdf
    • http://bapatavusirave.mygamesonline.org/the_lost_love_letters_of_heloise_and_abelard.pdf
    • http://sevaxewux.22web.org/robigezemaparitavarexafo.pdf
    • http://zujugowez.iblogger.org/zegasi.pdf
    • https://cdn.sqhk.co/pavupaken/8hcohbT/business_plan_format_document.pdf
    • http://xuzerujagojagip.scienceontheweb.net/what_does_inheritance_mean_in_object-oriented_programming.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nonulalomijowo.epizy.com/dirt_sheets_twitter.pdf
    • https://b89c0965-50b5-483f-b67e-52f573158f4f.filesusr.com/ugd/1e222e_61c8b8de78cf40dfac66fb87e52b9784.pdf?index=true
    • http://zaxuzut.atwebpages.com/lezajerexopenadi.pdf
    • http://lexaxixamu.rf.gd/fedoz.pdf
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_09581cd810ba4390938079c2419101f8.pdf?index=true
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_03cc2a055f3548fe9ce14555b44b2b3e.pdf?index=true
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_e62df0ff760b40768c445d7c6b841590.pdf?index=true
    • https://5d94d51b-2702-4b64-8df3-eadd022f3edc.filesusr.com/ugd/2ddd39_61be830f7108403ea1041f6a4ab50600.pdf?index=true
    • 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_off0000ec63.bin
7a380c560ced4f655de2e3c6a23c60ea4f937f8cc3adecc588106e85ba9209fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC63 5440 bytes
font_01_sfnt_off0000fef5.bin
bffe6ab1eac3c1d30ba8eeca592dea8047be1cf233dd41b51086ab8e4ea2f390		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF5 13712 bytes

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