Malicious PDF — malware analysis report

Static analysis result for SHA-256 365eca6b76d0af4c…

MALICIOUS

PDF

72.1 KB Created: 2020-11-23 20:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5426a59244023a0824881874f6dddb66 SHA-1: 1c636a60971acf68053f431e020b27b807f95f92 SHA-256: 365eca6b76d0af4c51d8f85ee6712c61755cf20ecf4042288a304e8e3bbfbef2
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as instructions for a Bosch Tassimo appliance. Static analysis flagged this link as malicious and the ML classifier assigned a high probability of maliciousness. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/strik?utm_term=bosch+tassimo+instructions+for+clean In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414515/normal_5fb2f1ce09130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412408/normal_5faf09df7824d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f87335db99b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382192/normal_5fa78663a0c55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zalomi/barakhadi_in_hindi_to_english_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/battlefield_bad_company_3_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/6681050258.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/tobijut.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/vikijumufalagovijomu.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/lipilikepep.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/rubelevivizo.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/sufunafu.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/hero_academia_season_2_episode_23.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD278 5052 bytes
SHA-256: f82e8ea8048a226d707c86b5a3fc25414d4863457cf85db9c96014c9b39897be
font_01_sfnt_off0000e378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE378 9872 bytes
SHA-256: 554402e273b74dfc7eb2af559a44d0ceb13b7efab426730a24ec5090c98558ac
font_02_sfnt_off0001053f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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