Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd86b057d852a128…

MALICIOUS

PDF

73.1 KB Created: 2021-06-09 11:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 10590fd766e7fcc9fde140c8ca3b4628 SHA-1: cc807a64f387c7752b60712e89f8b80a62adcc1d SHA-256: dd86b057d852a12885ca9a4ff08cd68d3829c5b7d1b54ffd94665858d474ceb2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a site offering to stream a movie. This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://huntic.ru/pbw?utm_term=fast+and+furious+9+online+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476768/normal_60172083e7cb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_6051b5b5e3d7a.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4384045/normal_60b5a0aacb91e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455178/normal_5fd6460a28d17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423452/normal_5ff651ba4d6db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_605dfc37af3c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_6017c2ff213b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450746/normal_606e20f68233f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500670/normal_5fdd41e22f0ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417670/normal_6060d0cf017c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fe775e7b54f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_60353f89e0003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_60bf493faa11f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_604999493569e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_60043eec1643a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386330/normal_5ffa22e49d916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505699/normal_602fea0e2e736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408476/normal_605d398f45585.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/34718666-b621-4e3a-9ce7-62a00107d380/sitemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2ba5e5-c90b-4a9f-9731-e8217ac53516/16406897042.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_off0000df3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3B 5224 bytes
SHA-256: 09dc2c4a866b4fccab50ffed48894772690e00ee73038ad7cf7ba1d7c2df2402
font_01_sfnt_off0000f0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F0 10700 bytes
SHA-256: b7dfb59846edc3b172d8b9dae92e93294dc3a1181d4a322c652d87a9d40ff3b0

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