Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8173225f561e64f…

MALICIOUS

PDF

71.2 KB Created: 2020-12-03 08:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5110b7810e51667d32a6c8a4d24b0fb3 SHA-1: dfbfb543a5aaa5048d354a80b1987dbe42f1fba4 SHA-256: a8173225f561e64f8dbed4eeb56f87083511426440b76b13656aaa9cc8691d69
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 0.9997

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=lightest+element+in+modern+periodic+table PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416939/normal_5fabbbb7a8ee1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_5fb9b9473b324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410441/normal_5fb2bc5293c89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5f918bd11e7dd.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/kubafezin/batman_8k_wallpaper.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e940bd14ff0dd29cb4d3/t/5fc2471661e25426e182c273/1606567702946/pspice_9.1_student_version_download_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/84880162799.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e88b8139af0376454bd0/t/5fc19e2b4f983757201cce7b/1606524459454/wobuvidemadakidizelor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12df85bcb0228a284406c/t/5fc62b0918e72e5fdba9fa96/1606822666730/guwavobodezezifirilepu.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/alvarez_guitars_rd8c.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf57273299f0c543936cb/1606219125601/jensen_portable_bluetooth_cd_player_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cecd6023-605e-47e9-8286-4dc6f60106fd/reggaeton_mix_mp3xd.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_off0000d950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD950 5568 bytes
SHA-256: 192f778403df089fa7832a996c3fa0d1dd3869a2d0ed35acc65fbea7886da00c
font_01_sfnt_off0000ec0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0E 10504 bytes
SHA-256: 8f148296baf4ed7d27fd7979ff8d34b9dc06bdd11bd6a655a0fe9f6f3458da65

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