Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2328013ef55ff2…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 18:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 841a0adb85777b271f6dadbed30400fd SHA-1: 8168e3d6312c7f5b4d7ac61bccd17a16fc42fac1 SHA-256: eb2328013ef55ff2de9a52f2268fc6666b1de226c8c354eb6a8e159744d06be0
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=how+long+do+you+roast+a+turkey+in+a+convection+oven PDF link annotation
    • https://wegizazuxiri.weebly.com/uploads/1/3/0/8/130814830/bunizodirelowerux.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/how_do_you_become_a_certified_program_manager.pdfIn PDF document text
    • http://bejawutipage.mywebcommunity.org/takilegozil.pdfIn PDF document text
    • https://zotejukewas.weebly.com/uploads/1/3/5/3/135347558/ruxetel_banagurulolufew_pitidesuwefe.pdfIn PDF document text
    • http://vapurese.22web.org/ladopatekunuteluturaxamo.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/2522624.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/xusizadedoxubajiwezumawem.pdfIn PDF document text
    • http://zijixiteluwek.scienceontheweb.net/an_ember_in_the_ashes_movie_adaptation.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/wixatax/vovagevonilelejage.pdfIn PDF document text
    • http://pinezininefos.epizy.com/english_worksheets_for_grade_2_prepositions.pdfIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_a56f8a2616784f19a887a2369cec1c65.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiniruru/255778654.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/koxem.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/appium_android_device_settings.pdfIn PDF document text
    • http://vaxuxumagoseju.rf.gd/oster_food_chopper_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/wordly_wise_3000_book_6_lesson_9a_answer_key.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_e3bb5bb9b9fb4b31960c22e9244fcb78.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AB 5268 bytes
SHA-256: 797f3fc55e7315754a7f6ab4bf949c793dcb5f7e3fd87cf01f0e0b6c8c9ab60a
font_01_sfnt_off0000f6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BD 11284 bytes
SHA-256: c83d33cac9bb85341f2ded0bab05121f855afdeb4b7773d336dfd70d95e0ad60
font_02_sfnt_off00011d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.