Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f146dfd27932d6…

MALICIOUS

PDF

77.7 KB Created: 2021-03-01 08:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 330eeb429bbf80f7ebe9f8b2843c46e9 SHA-1: 2d4132894360b4ee145220a2b377c735420888ac SHA-256: a4f146dfd27932d6c8557e124dbddf361de69a80c3aba2dcd782e773a98a1acd
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a presentation topic to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=3+levels+of+inquiry+in+philosophy+ppt PDF link annotation
    • http://vopugixeroramox.medianewsonline.com/php_html_file_to_string.pdfIn PDF document text
    • http://zumbayuliya.online/ashton_sixth_form_college_term_dates_2019n36pa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367290/normal_5fc81b2305153.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/27421508204.pdfIn PDF document text
    • http://girlsbeach.space/relikaluzer8uwxq.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/lyrics_of_seven_years_by_lukas_graham.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/why_is_my_honeywell_app_not_workingpcifj.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/jadere/debizonidodag.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/taminajoj.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/25574703631.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/69791830367.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/98069218814.pdfIn PDF document text
    • http://xijixabomama.rf.gd/xovopiwudosovo.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/49894064395.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/baixar_badoo_apkpure.pdfIn PDF document text
    • http://fepadegan.epizy.com/33131620932.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/sheet_music_of_silent_night.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/rubetejaseladarunijef.pdfIn PDF document text
    • http://bajefeluxit.rf.gd/74571423544.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C8 5020 bytes
SHA-256: ae5ac2c6c1fa43bfb3bb47aa307c3ff53de0f63ade666a2775db5331b8e57e88
font_01_sfnt_off0000f8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DF 10016 bytes
SHA-256: f6dd21cefe08f3783643a224a4c525156f4e21f23af63570e2b36ca8c138b51d
font_02_sfnt_off00011b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B36 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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