Malicious PDF — malware analysis report

Static analysis result for SHA-256 98301ee61b77c4ab…

MALICIOUS

PDF

70.7 KB Created: 2020-12-03 00:23:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5d61f891f7863a8e8857394d52f6d3b8 SHA-1: ee89fc9a95636b18b1733b19892d406c4a382337 SHA-256: 98301ee61b77c4ab33ccfe74bde94461140f4db720f0daa00cbe091cbb334918
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to suspicious domains, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=piano+sheet+music+for+simple+man In PDF document text
    • https://wulonuvesiga.weebly.com/uploads/1/3/4/3/134362584/laxuko.pdfIn PDF document text
    • https://xajadigosulibab.weebly.com/uploads/1/3/4/6/134650053/0d55230b90.pdfIn PDF document text
    • https://sitawixabebel.weebly.com/uploads/1/3/4/3/134319036/rumub.pdfIn PDF document text
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/gujorijabawodipopoti.pdfIn PDF document text
    • https://gosaronazaniga.weebly.com/uploads/1/3/4/8/134851605/bemit-detekometa.pdfIn PDF document text
    • https://toxoxazagole.weebly.com/uploads/1/3/0/9/130969938/8513704.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://static1.squarespace.com/static/5fc0c67840f1034a5ca82603/t/5fc0e7854e98326c02318026/1606477704341/nedezixunoregagirinoke.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe035f7acac6192a871cb6/1606288224291/buzz_lightyear_spaceship_play_tent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba26757b-2e87-4916-acea-6ebf4714ab0b/7326040855.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1bcf424b06a7eb3051a73/t/5fc49fff3485235c865972c2/1606721536324/61450357626.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf2b8c7afe470b55577f9/1606218424447/resosowop.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c5c1972c46e3c66891e/1606290524968/babijiru.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_off0000c9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F4 5140 bytes
SHA-256: 860fe9db34188f3b00c95bc1344e2faa8e7ed4372a00957e6496fff1083eb60a
font_01_sfnt_off0000db39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB39 10928 bytes
SHA-256: 97eca5bcef147285ec55f180b954fa5efea94d92fbc15c45fd485f2700e2c654
font_02_sfnt_off0000ff91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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