Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c030bb7476aa55f…

MALICIOUS

PDF

79.0 KB Created: 2021-02-11 05:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1494068c9f77ddbc8ee5c1cbe98d03cf SHA-1: 6e4aada101c82cbefea14400fd0b30908562248f SHA-256: 5c030bb7476aa55f4ed681c45f0e02a453cff7f5ec907aad7178b1420c5d2eee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=bitmap%20to%20jpeg%20android PDF link annotation
    • https://cdn.sqhk.co/vudebalox/igNgjTY/ligojabuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/jgieIgj/2055380341.pdfIn PDF document text
    • https://cdn.sqhk.co/daviwiloma/rmkghoQ/339692999.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/3aibxjg/rawiwumutabenolixotapaj.pdfIn PDF document text
    • http://dorightschool.com/combine_sentences_using_relative_pronouns_exercisesemc3u.pdfIn PDF document text
    • https://cdn.sqhk.co/wogigixa/GgjG6fC/28281012420.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/cu5ifge/fast_ballroom_dancing_style.pdfIn PDF document text
    • http://fitness-ital.fun/zetakadisadoposiluzomizw7k6.pdfIn PDF document text
    • https://cdn.sqhk.co/gagupibi/cfidjaD/deer_hunting_archery_kill_shots.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/what_s_your_story_lovelink_walkthroughzj4uo.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/RhimFib/tikokaniwajofowitefimefer.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/mixanaz/flight_reservation_form_html_code.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/indian_army_whatsapp_status_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/81156889445.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/40217646765.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_off0000e710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 4980 bytes
SHA-256: 7de99758ee7b7451a70323d1d47e0166f76d05fa7d4569da6ec2ef3f9861a713
font_01_sfnt_off0000f7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E1 12644 bytes
SHA-256: e6746511d8c45bb9e42daca273bf55e04e7545ef1240abb33c78a3ce6a6200b7
font_02_sfnt_off0001214e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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