Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d7c73495c4d338…

MALICIOUS

PDF

70.4 KB Created: 2021-02-28 07:29:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3394ff1e59c316fbd83f4c7f19b21f6f SHA-1: ef805c5c98556e52ee44fd394d0eef1bf20fd638 SHA-256: 03d7c73495c4d3385318494b0429a02bf985f73c3449c35a91225761f8bb0a18
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of external URIs within a PDF document often implies the execution of embedded JavaScript to facilitate redirection or payload delivery.

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://baarspo.ru/strik?utm_term=suunto+ambit3+manual+dansk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489983/normal_5fde58538b279.pdfIn PDF document text
    • http://vobigivu.22web.org/investing_for_beginners_audio_books.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/am_i_eligible_for_maternity_allowance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443354/normal_5ff4898b12317.pdfIn PDF document text
    • https://cdn.sqhk.co/gadakoferupa/gi9icib/16655493727.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/eMq3ggg/25438156832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5ffac482b1e5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420906/normal_5fca075fd5297.pdfIn PDF document text
    • http://sunufosabupes.scienceontheweb.net/what_is_the_universal_remote_code_for_tcl_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495860/normal_6018029208908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478933/normal_600e30902dd55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabozet.epizy.com/49420998042.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/apache_tomcat_8_for_netbeans.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/how_to_use_statistics_in_data_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/joeboy_beginning_lyrics.pdfIn PDF document text
    • http://fizanotafogibag.rf.gd/56547245591.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC129 5348 bytes
SHA-256: 88a63d77a2f269dd95c4d5bb2ecb3f1ec84184b27f86c32158c9667531daa10a
font_01_sfnt_off0000d343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD343 10288 bytes
SHA-256: 0b11706bbffd881e659b538e1deba81dbf503b47a6800468eb4ac460c9562eb4
font_02_sfnt_off0000f6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C7 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15

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