Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6ac017d05d71de…

MALICIOUS

PDF

68.5 KB Created: 2020-12-15 02:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b236f78d8894071cd1f97a05d387b4e0 SHA-1: 99eeaffd9c8be48ea1e2894ec86fe65f0a244022 SHA-256: cf6ac017d05d71defe075423d4f9e0a2308f0f1c22a36759f4a96454589aef52
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that leads to a malicious domain, disguised as a search result for '50th birthday party favors for a woman'. This suggests a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a site that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=50th+birthday+party+favors+for+a+woman PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426262/normal_5fd62ab072a8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5fc246f0a8b19.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/10c36f64-ecf2-4d97-85e3-3cc3c572cfc5/50057023028.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc72731eddbb05c6893b1dd/t/5fcf69877379aa359777f236/1607428488596/xatotatuveni.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/xunesuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/67113566056.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/celeste_and_jesse_forever_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/044a911b-0d2a-4382-bd8e-23b58de074ef/interactive_reading_notebook_flaps.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/93297896807.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55a6c8139af037662c795/t/5fcf9cbd57846c5b835d448b/1607441598671/zalev.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/marathi_actress_photo_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/81683402267.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b09c1c59a74bd9921651/t/5fcd2dbeeb18547f4b8e1290/1607282110725/strange_case_the_alchemist_chapter_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd9e336-8d8d-47a9-99ce-e9c96ab89d07/medog.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/identifying_transformations_algebra_2_worksheet.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_off0000ceab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAB 5812 bytes
SHA-256: f850950d6c1c2dc507ba646351d4cb4d4e0e2c2c74fd0a295f9120b08d6707d6
font_01_sfnt_off0000e264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 10040 bytes
SHA-256: 43d3797f0cf83a5a85b4d18f17e7cc831cb0860fe2eb3c5023daa46412bdacc8

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