Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d6f9527616b411…

MALICIOUS

PDF

76.0 KB Created: 2020-12-11 11:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9e6ac7bc9b8da82de13406a845cfbd4f SHA-1: db37acf58858c398330929b4100593571aa3ea93 SHA-256: a9d6f9527616b4117487e15c5b2b62facb825e75e20652f707bd243e02e4e01f
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 0.9998

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://traffking.ru/strik?utm_term=iowa+valley+high+school+enrollment PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501208/normal_5fc9522f2cbd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5fbce6f339076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5fcff3cdc31e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f89459d2672e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f94755ccfc1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405185/normal_5fcbfa57cf729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494431/normal_5fabea06f362d.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/5fc4dd3ec89e1c4b8fd7ff57/t/5fd1beb9f2ee360040f8812e/1607581370240/savifajidulamutijuwiwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc26007f81c9a2a0ceee40f/1606574088330/mijasotidirutis.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/xaxifupudoliwuma.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/15719350126.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc194132cf09257bd70d589/t/5fc425d14f98375720625477/1606690257984/xiwopifox.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0805cd49dd12447321748/t/5fc148aa3570fb44d131f891/1606502570784/excel_alternating_row_color_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/87666083188.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_off0000eb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB37 5404 bytes
SHA-256: b61de153fd59031f8064f9b3ad48e11ccbcf9db057dc691f807d21fecae21793
font_01_sfnt_off0000fd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD91 10956 bytes
SHA-256: ac533f180d58aa986dbaec9538cf4a33b66b39180fea57235cf8f6e24f005322

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