Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a75146993459915…

MALICIOUS

PDF

69.6 KB Created: 2020-12-26 07:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c711d16dff99cc3b33cf5459060b4930 SHA-1: c36b5f4ab5a67b3cd3d755d7facf31da21083872 SHA-256: 5a75146993459915741568fe339fa1787e98bd3c9d7fb2e08be8c2eaab3e8c49
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/strik?utm_term=word+games+with+friends+online+free PDF link annotation
    • https://cdn.sqhk.co/ludibipimilu/hco5Phg/chinese_checkers_2_player_rules.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496391/normal_5fe42fc394bea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392649/normal_5fcc0dee65b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fd7bd47c5ed4.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebosatu/hhjeMhf/mupexawutotewivudexob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f932a43296c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386609/normal_5f8de5c9702bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473947/normal_5faf8341091ac.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/kagedatabujo/fivusofunimimovi.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/whatsapp_messenger_new_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7cd7b8-0f03-40a1-97e7-a07803583c7a/berchtesgaden_national_park_hiking_trails.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_off0000d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 5428 bytes
SHA-256: c0c342e95051e4b8f7aa82d3daef412d5f417cc302be308968be349cba67b8db
font_01_sfnt_off0000e474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE474 10992 bytes
SHA-256: 369c4564f1694c92a0f1af9726ee4b06dcb9922654256270d40e5868a6fa2578

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