Malicious PDF — malware analysis report

Static analysis result for SHA-256 584cab8b41160cb5…

MALICIOUS

PDF

74.7 KB Created: 2020-11-13 11:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7990720caafdd5080e029bb54b4a8ff8 SHA-1: 15db59f90bb502d2363b9a67f324a95b74417483 SHA-256: 584cab8b41160cb504d67ff4c1fafc085391ca74c359ca387c745a3fe7bace44
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 0.9998

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/strik?utm_term=timothy+ferriss+speed+reading PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5f8af0d0e1a66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ef58b2-1b44-4db6-bccb-9349212dca03/37953298578.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/11467460438.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/nesatogaluwid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd04c7f9-5cff-454d-9e23-c612e8b86dd2/yamaleela_telugu_audio_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e31009d5-42c5-448c-b546-5a5e423ab8bb/dopibo.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/ms_word_create_new_page.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/3325916849.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/xizenoxafiluwu.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/fanitoritunowipis.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/sobepevumifu.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_off0000e6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D6 5476 bytes
SHA-256: d83bf3c32bbd2a08df3a6a801ad5e6333371b946ea874bc2ea916352e7ac326e
font_01_sfnt_off0000f95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95B 10732 bytes
SHA-256: 70fe6a5587b22cd3792a8fb249553d06a872e5745e2b6928c31326f38d264400

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