Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb310664c5b70961…

MALICIOUS

PDF

74.7 KB Created: 2021-01-27 02:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d596ad16b85d6c1ce1ee774800834b18 SHA-1: 26edeedb4d4b64d1d3d64949213871a3c864c8d7 SHA-256: fb310664c5b7096174979185961f409504c2deb5dc2b39b23a90ee0c66baf526
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that offers a download for 'bus simulator 2018 free mod apk'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to the lure. No scripts were extracted, but the presence of external URIs indicates a potential download or redirection mechanism.

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://trafficel.ru/wb?keyword=bus%20simulator%202018%20free%20mod%20apk PDF link annotation
    • https://cdn.sqhk.co/kupejabel/ageihb2/mad_tank_online.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/highhid/ion_vac_cordless_vacuum_tzumi.pdfIn PDF document text
    • http://tdsevsvet.ru/buzadedanavogaval9wxy.pdfIn PDF document text
    • http://gaydating.world/modern_sofa_bed_couchesf0rxr.pdfIn PDF document text
    • http://price-list.moscow/segorexesakabavafememuj4n7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_600ff84236a07.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/hj6hjUG/sisters_movie_trailer_2016.pdfIn PDF document text
    • http://nominasacra.ru/rogaxokekevodabevufemases7u5yg.pdfIn PDF document text
    • http://carbags.site/liriziwosakakon8vs2v.pdfIn PDF document text
    • http://itchia.space/bubble_tea_popcorn_chickenzpyit.pdfIn PDF document text
    • http://temilops.xyz/stick_cricket_live7ps7k.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/wovugi/85910242729.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/69625456970.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/kitedojere.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/63891669100.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/sesozewuserojisiga.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/16036650140.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/certificate_of_participation_template_word_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/kingsland_primary_school_ofsted_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 5820 bytes
SHA-256: 7853e859c2e14ca29518ba0c0799e4a6898f85e3ed0a0d2ddca512610d5af8fb
font_01_sfnt_off0000ec32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 22372 bytes
SHA-256: bae7ff858421afd04059786dc70e909bce6691df53a0550265ec9eefc345ba69

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