Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ef3e4403bbaa5d…

MALICIOUS

PDF

78.8 KB Created: 2021-02-11 10:40:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1a4ff28b735977aa6a6cf40d38d48b5 SHA-1: 6ccfda4169e421cf7b6098fe2edc4a5eb3941f25 SHA-256: f7ef3e4403bbaa5dd9574ca7993ef28cbe78e1d89c2936369c9f2343cb190ee4
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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 presents a deceptive download button. 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/123?utm_term=riptide+gp+renegade+mod+apk+revdl PDF link annotation
    • http://sfr-espace.best/futitoviwenakamwo1ta.pdfIn PDF document text
    • https://cdn.sqhk.co/ninoporaleva/iTifQ5m/how_to_bake_a_sweet_potato_fast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461216/normal_5fed0f169a3e2.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/SYidD1t/probabilistic_risk_analysis_foundations_and_methods.pdfIn PDF document text
    • http://poroda.site/polizarosokozowob5hio5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_60147400e5128.pdfIn PDF document text
    • https://cdn.sqhk.co/zivalutapa/jNo5ZHl/mortal_kombat_mileena_vs_kitana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481528/normal_601609a9a10a1.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/gjhhigk/1642487589.pdfIn PDF document text
    • http://zespodsvetkoy.site/ligazosi88jpl.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/hho7lSi/35192938698.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/hhdhc89/dezepisixopi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinabom/lifujikamutudodaxota.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/25766889520.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1D 5232 bytes
SHA-256: bbf7582e6b6dff86f177c659787a4288a01b1a713dcf0f24a9c24cf5935aec1d
font_01_sfnt_off0000ece3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 13812 bytes
SHA-256: fee0a2982cc3c4c4f8bb4138655525ab4f406bcc4c90c00164b1d14886eb5c02
font_02_sfnt_off00011908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11908 16076 bytes
SHA-256: c75124cf82eb85a290f44dee9d31b74c8eae8229c650450d727e37a6e1035227

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