Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0426d0e30ad0d2…

MALICIOUS

PDF

75.7 KB Created: 2021-03-09 16:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 21adaacd90f361be125c2f40340bcb43 SHA-1: 519a097327cc990c858df49e6d07c43ee676a034 SHA-256: fc0426d0e30ad0d2120aa0b33d8a12dc7f6eddfd2aa365fa9c261effba97540b
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The presence of these links suggests a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=new+moon+in+aquarius+2021+ritual PDF link annotation
    • https://cdn.sqhk.co/silakozafi/aBsligZ/kaiser_oakland_pharmacy_fax.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/16049582821.pdfIn PDF document text
    • http://trujillostacoshop.com/citroen_c3_2018_manual4rfes.pdfIn PDF document text
    • http://navalny.design/shark_lift_away_deluxe_roller_not_working5t46f.pdfIn PDF document text
    • http://genoray.pro/91648467718gwe33.pdfIn PDF document text
    • http://repair-foto.ru/narufezeforofatbd9x4.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/94637242594.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/el_proceso_de_investigacin_cientfica.pdfIn PDF document text
    • http://gnoogle.site/3181616728dsicp.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/xXhias3/funifinakudareburivomuzi.pdfIn PDF document text
    • http://pitukegurajokup.22web.org/bloodborne_and_airborne_pathogens_test_answers.pdfIn PDF document text
    • http://detonic-italia.website/zelawa55sg.pdfIn PDF document text
    • http://arendaavto.taxi/wulidebojetofamuelba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_96cb15d7a0364d26bb0816dbadfeb9ad.pdf?index=trueIn PDF document text
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_979de355f04d4be4852505b33cdb83ff.pdf?index=trueIn PDF document text
    • http://bebovufuvuji.myartsonline.com/metro_last_light_redux_good_ending_walkthrough.pdfIn PDF document text
    • http://semowomeso.onlinewebshop.net/arthur_andersen_scandal.pdfIn PDF document text
    • http://magivekuwili.rf.gd/23305283713.pdfIn PDF document text
    • https://ba428ff1-d53d-4eb5-bdb2-cc960067f420.filesusr.com/ugd/7041e4_95b5949b1d14437f82d7d82291cce3d2.pdf?index=trueIn PDF document text
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_35c65852ba6b4d8a9f1828477c9e6aed.pdf?index=trueIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_202bd87224e7436d9bbb94ccb03e3207.pdf?index=trueIn 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_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 5344 bytes
SHA-256: 6cd854931a73a87c330e9663e342083ec6ca93d5bc4a747e2b0e9685489d8dba
font_01_sfnt_off0000fd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 10712 bytes
SHA-256: a76029f103aaa3eb9c3e8abb64df5feb4b0911ee36b4c7f9fe4077881fcbe2c6

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