Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c080a2da09c7b3c…

MALICIOUS

PDF

83.1 KB Created: 2020-12-10 20:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1f1a60fb337bd060ad104832f82d0659 SHA-1: c2e9fbcdd6cf74a15356b422cea0c965a7c516bd SHA-256: 2c080a2da09c7b3c86e5811490b136142179df7ecd901855e91f6f450858997f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the presence of a malicious URL within the document body is a primary indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=learning+korean+books In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475216/normal_5fcbbe15d220b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488810/normal_5fbe13c8dad91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480584/normal_5fbe0bdedd0c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_5fb2d44992af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5fc365e4c7d3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0bebbcd1e280355d37542/t/5fc1a2ddeaf37e3b64da0730/1606525672302/votebetarumotaj.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/bluetooth_microphone_application_for_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d69e5e8e827d42afbc56/t/5fcd83b3978da30c56150a93/1607304119553/photovoltaic_solar_power_plant.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/39538624016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78ab781da8a590db12154/t/5fcf5d1b1a78ee5f0165cae3/1607425309050/sneaker_clicker_2_mod_apk_unlimited_money_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc127ac1972c46e3cc7cc7d/1606494125549/lufabidopidigi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc362cf5687f52b6b9115bf/t/5fc52cd93f75b166437aaaca/1606757594492/medidas_de_tendencia_central.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8728a6ab-2327-4c2a-aa83-e720477fe2b7/overworld_labs_games.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_off0000ff0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0A 3464 bytes
SHA-256: b2aeb35bf2788d989ff6fb0db610df08a0c9362ef1a35cef5bfb0c85db50d89e
font_01_sfnt_off00010b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B82 4968 bytes
SHA-256: e929e566eefcc509e8a3104c91443655f484efa2f6bc6d3af3e6446511474819
font_02_sfnt_off00011c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7D 10120 bytes
SHA-256: f7e8ca03d70cceb8b7510723187a8bf667ea008b9b519fb0ee97f3030bcd3ae5

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