Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a1ba9f5a56e74b…

MALICIOUS

PDF

85.5 KB Created: 2021-02-23 02:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c55caa51b8f154d1ee12b415284292f6 SHA-1: 7c97eb470c267301c901143506f97e19b9b9093d SHA-256: 69a1ba9f5a56e74b90eb33fcd6b5e416f470d9c7cfe5bb70cc481541d52d23ee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site, disguised with a search query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest a phishing attack.

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
  • 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://maypoin.ru/strik?utm_term=bass+tracker+parts+ebay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467043/normal_5fea42bd720c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_602975a9a5c33.pdfIn PDF document text
    • https://cdn.sqhk.co/dagidomu/ifLJBhg/zavomajugoradesowasomego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401525/normal_5fdda31e69312.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380393/normal_5fe5915221408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419192/normal_5ffc92940712c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465392/normal_60035449c7dfe.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/ijhjj9H/children_s_videos_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_600a74dcd9574.pdfIn PDF document text
    • https://cdn.sqhk.co/vutexexukus/aWiahYU/61649590913.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/bGI0P8Z/dukarebixemabugaruxojur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_602938e35a13d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422377/normal_5ff2ff3f879ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_6022998b94f23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_6021a675c2e39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_60344134acb87.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/vaxebisapesi/la_bastide_de_moustiers_guide_michelin.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/40679701460.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/sipegebowexorigaso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5E 6620 bytes
SHA-256: 51067e7c159ea8c41801c0b5281a6e393f405f09288da2a154784ba922c07b9d
font_01_sfnt_off000111b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B1 5252 bytes
SHA-256: d0415c5fef0ef202cb82062ab7f02c3b7b4c076e32a3c0def99f62cd286ee248
font_02_sfnt_off000123a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A5 10844 bytes
SHA-256: 869b1ce4621128fe8702d554ae9cc601a4cbea04e549f9adfb176b988bffbef3

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