Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8389116c5729018…

MALICIOUS

PDF

79.0 KB Created: 2021-01-30 20:08:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5683b85a0ce10ecfdcda4b21d04ba743 SHA-1: 26d24683a8ea6e556aa145c9384e1c2f4ceea75c SHA-256: a8389116c572901894fe865858e81f08d6f0a59802dd10abf6d3600e20e36b54
104 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a domain that is flagged as suspicious, and the document body text suggests a lure for a free download. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=puntos+de+partida+10th+edition+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382408/normal_5fcdcd0b630b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366660/normal_5ff69c5c7f9df.pdfIn PDF document text
    • https://cdn.sqhk.co/gizadomoto/ichb3J0/auto_gangster_mod_apk_home.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/ggRheif/29431216045.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413455/normal_5ffde36e8652e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373797/normal_60119829ce147.pdfIn PDF document text
    • http://letilemugemin.66ghz.com/rojigixabuzemumij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448094/normal_6000d5622a7de.pdfIn PDF document text
    • https://cdn.sqhk.co/vunofufi/SMAXhig/photo_editor_macbook_pro.pdfIn PDF document text
    • http://xegafutulon.iblogger.org/cbs_fantasy_football_cheat_sheet_week_8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keputeka.epizy.com/32170073594.pdfIn PDF document text
    • http://sozazavore.rf.gd/adobe_illustrator_free_for_android.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_off0000f52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52B 5416 bytes
SHA-256: ddd042090e5e58dc6b893d10924687efb02c06da4f9af4f8e0262eab1edac16d
font_01_sfnt_off000107a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A5 11796 bytes
SHA-256: a87a834d21fe8de3e2076051e49823c1a7293c4283715a662effe66cf0cb1a75