Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc6a2884f57bead…

MALICIOUS

PDF

69.3 KB Created: 2020-12-17 12:36:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 62fb70c22a5a1f82475a126ba4483458 SHA-1: e9f5fd4d6caccd94cef0c3c1e7c4c9dde2029851 SHA-256: 3fc6a2884f57beadd95b05ae548abf894cdb3723c5f56dd7ddf6b2d84fdb36d1
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URL pointing to 'traffking.ru', which is likely used to deliver a secondary payload or facilitate phishing. The document body, though heavily obfuscated, suggests a lure related to a book download, aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffking.ru/strik?utm_term=between+the+world+and+me+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387702/normal_5fd1c08cabf00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2b45ca87939686413d8d4/t/5fce2e851e1a4d7de1548905/1607347846042/zikomipamusabeker.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/rey_arturo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a04f02915d4a16f99096/t/5fd7406b7fc52c206940656f/1607942255510/ldap_admin_tool_user_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c991c6d9645836219624/t/5fc128f59ee0f32b877c7bb6/1606494453587/1384818455.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc080f7bf71053ccb0e3c67/t/5fc4968ff8cdb769c675d23a/1606719119811/the_pyramid_principle_by_barbara_minto.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/bexufa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf85d4e98326c02d5cc80/1606285406503/nolin_lake_ky_cabin_rentals.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/diwotipum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf4435dd72e923764b8289/t/5fd16f578ba64b78df4a00ef/1607561048568/wenimuzajegaponugon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc77bf45c272238a81a68c4/t/5fcc0d29d336b863f0af627d/1607208234063/wood_sofa_set_for_living_room.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/genesis_collection_ps4_trophy_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f319ab79f442f229e2d8/t/5fca7b34071c6625ee75c8ff/1607105333285/different_spanish_words_for_funny.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_off0000d154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD154 5244 bytes
SHA-256: 064bbe4462e56fddc2c74bcfce7917da00f8fac0a48997101cc992be9583d0ab
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 10876 bytes
SHA-256: b9e8798ee536baf27b149d03d289c017564ebca33433139bac0d9564c3164fba

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