Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8b3c9234cd6465d…

MALICIOUS

PDF

76.4 KB Created: 2021-01-04 20:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8446dca64dc476d38a5709f269e22023 SHA-1: 1c8699c8aa36aa6a439ff21bc71f561a3624b567 SHA-256: c8b3c9234cd6465d2e4d4ecfd36e68a9bb5c0971980a3483ba3e34ca7e8c4367
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 0.9980

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://traffset.ru/123?utm_term=ff14+messenger+of+the+winds+guide PDF link annotation
    • https://jazejuvo.weebly.com/uploads/1/3/4/4/134439384/dewojojuku.pdfIn PDF document text
    • https://xixobuba.weebly.com/uploads/1/3/4/8/134898189/zisumamewizadowo.pdfIn PDF document text
    • https://balebapu.weebly.com/uploads/1/3/5/3/135322653/536478.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/xamebosoxaz_gawim_gebapen_fasemamoxexug.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/palepomokepesi-sulex-vuletiribexak-babesefe.pdfIn PDF document text
    • https://lotuwuwobegeze.weebly.com/uploads/1/3/4/4/134476082/sudib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481509/normal_5fe3e40d461e7.pdfIn PDF document text
    • https://bonifivudinuf.weebly.com/uploads/1/3/4/3/134305406/lawerinakoziji_besomibo_buragepo_fobuwo.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/bepukuba/tv_guide_san_angelo_texas.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_off0000ed5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5E 5268 bytes
SHA-256: 3b88d6fb3390d8aad231f44e6f5cc327a6933ac68f6a3430cd9fb9f77bedbde5
font_01_sfnt_off0000ff40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF40 11028 bytes
SHA-256: 86da22172ff378c2dab44d2eb275a0880a4d0a9e7d09ba441e9ff466aa1f35bc

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