Malicious PDF — malware analysis report

Static analysis result for SHA-256 9410d2cf339ed01b…

MALICIOUS

PDF

73.4 KB Created: 2021-02-18 21:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6cd7c5669760607a85b63b9929b70ef3 SHA-1: d32235fe4a1eb778fc36637d47d0103a83d9b6ff SHA-256: 9410d2cf339ed01b39e3c083bcd4d810b16ec43e2d884e5c7055dc99c3f3fc95
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded JavaScript and multiple external URLs, indicating it is designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The document body's title, 'How to deal with suspicious packages uk', serves as a lure to encourage clicks on the embedded malicious URL.

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://jottigo.ru/strik?utm_term=how+to+deal+with+suspicious+packages+uk PDF link annotation
    • http://vbruti.site/66975849423y369i.pdfIn PDF document text
    • http://makamar.xyz/tubemate_2.2.5_gratisc743q.pdfIn PDF document text
    • http://badgesverified.com/ludadumujn5qjl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_60017be73a09c.pdfIn PDF document text
    • http://nazhivy.net/67404653525l6fqo.pdfIn PDF document text
    • http://lidzadva.xyz/beowulf_questions_and_answers19hwi.pdfIn PDF document text
    • https://cdn.sqhk.co/tojofelekob/KPFiadP/28462773955.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368752/normal_60078bb904a58.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/Y0gj4pk/tadujolekavuvenepidima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_602e45a52d781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_602d93698a8f0.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/fokapikow/lamokufakojarinigema.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/96021232516.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/niverop.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/is_the_game_of_thrones_book_series_good.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/jixetovufunisedid.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_off0000e1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E9 5356 bytes
SHA-256: cf1292380ecb9768f7dc32acde6122402b927194faf7e036e5aab21fa42e2bb1
font_01_sfnt_off0000f42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42F 10580 bytes
SHA-256: fd6d3fefd1ee85c238b76a1596753b1cb816595e5b72b67f4b24a8a739cd29bc

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