Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0a9fbd58e93a78…

MALICIOUS

PDF

66.6 KB Created: 2020-12-25 19:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8c141d7e60f5c37044c80577ea2467a3 SHA-1: d1b9ebbde521de3fa057d7f40242319eba5cd3a6 SHA-256: cc0a9fbd58e93a784224b0d7f4c4fd3a824fa13d8b671075ed3702d10874a15a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?utm_term=dwight+yoakam+songs+fast+as+you'. This URL is likely used to phish for user credentials or download additional malicious content. The ML classifier also strongly flagged this PDF as malicious.

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
  • 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/strik?utm_term=dwight+yoakam+songs+fast+as+you In PDF document text
    • https://cdn.sqhk.co/papusabefo/K3gdrih/agent_orange_band.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/gpiiFlc/ranedoxiji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382418/normal_5f901a342376a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419626/normal_5fc7d14778acd.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/u5heijl/dungeons_and_dragons_online_worth_playing_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/supopelax/WrTDggS/rekixun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_5fbd38ec8a7eb.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/fhcu3ia/62669147752.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/jdXggij/nottingham_city_hospital_ward_names.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/jozaponi/capitola_pier_fishing_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gokikikazojun.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/nedapokexipajosunaradula.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/ana_definition_of_autonomy.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/xotapogojovabobuwef.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/new_krishna_bhajan_ringtone.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_off0000c7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DD 5308 bytes
SHA-256: 1d9f3d3779a163fa438721495ee1106e8a5b334c47701d54e2acb1f3dbb2d00d
font_01_sfnt_off0000d9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F4 10368 bytes
SHA-256: 587573b02ae4647cfc40d58e1e7c1d8d8ae2eb93690365706f06fe2e76246f69

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