Malicious PDF — malware analysis report

Static analysis result for SHA-256 404720ce6468fc6e…

MALICIOUS

PDF

290.6 KB Created: 2021-01-01 20:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0205ac0c0de6ae9a8a71681eb3fb9200 SHA-1: 97a0169487a00f218c79a097c159fcbdceb6b3b4 SHA-256: 404720ce6468fc6eec150eae05486cea1118da9da3d92557e5c1c97df6d7061e
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 a heuristic indicating an external URI, which points to a suspicious domain. The document body, though heavily obfuscated, contains text related to a search query, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9673

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://traffking.ru/123?utm_term=what+channel+is+espn3+on+xfinity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5fa1d144e75d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460058/normal_5fbcb3e4a9cfd.pdfIn PDF document text
    • https://muverope.weebly.com/uploads/1/3/0/7/130776407/aa174ce54fb50.pdfIn PDF document text
    • https://nurituxokel.weebly.com/uploads/1/3/4/8/134849265/savepodidazodewukiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f8e70e0be835.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/jedadokuti/amadeus_altea_reservation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/zudoninabesutasorijemov.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/matrix_approach_to_simple_linear_regression.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/vifuvuvivori.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/identifying_theme_worksheets_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/bamitarike.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/matthew_kime_obituary.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/16617109983.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/pennridge_school_district.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_012_off00045f03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45F03 17828 bytes
SHA-256: cc2ebfdcb984d758f0c2829f0f1ee8c74b03675f2ecc765d87e1f1a20e0abdad
font_00_sfnt_off00041507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41507 5356 bytes
SHA-256: 5e67ee7047e560e4fa910239efa38282a8eb16ad27043a04df8c55ade8c28c14
font_01_sfnt_off0004275e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4275E 18304 bytes
SHA-256: 2668a886dc9ed21470de0d2bc2d972d55e2d9a9d82388aa977d9ca99cbaada5e

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