Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c68395980777629…

MALICIOUS

PDF

73.6 KB Created: 2021-01-13 10:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 922d3903fa7eb63ba905c5d1638c683a SHA-1: d3ee4ef623a2bec4660ab36417078078d59511d6 SHA-256: 3c683959807776299b3fa77b1d4f793b55e59a5d25b1be3c78f4cfca44a976d1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. An external URI pointing to 'traffnew.ru' was extracted, suggesting a redirection to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI indicate an attempt to deliver a malicious payload or phish credentials.

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://traffnew.ru/123?utm_term=sticky+fingers+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372076/normal_5f8d090a97298.pdfIn PDF document text
    • https://site-1166701.mozfiles.com/files/1166701/pokemon_tcg_online_codes_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/ZOOVii1/26133493814.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5fde3e8ca7baf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406202/normal_5fedc3e66d407.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/jYhdic4/phoenix_wright_objection_font.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/mikibetiv/agenda_2030_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/tally_learning_book_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/zetenejomaxun.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/pojodov.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/autocad_software_for_mac.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_off0000e22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22C 5260 bytes
SHA-256: 86729b1ad06d9ce7154b1b0cd099082b5673c7e92948bc76741ac11a48b6ecf4
font_01_sfnt_off0000f433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF433 10980 bytes
SHA-256: 7bc0cce36938a50641f136a291e646f893b1982bc10b93f75a7bae44e0c5c4b5

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