Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd3a14fab56e306…

MALICIOUS

PDF

57.0 KB Created: 2020-11-13 06:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: eeb4f854e65119f208028a703f6b22e3 SHA-1: 330ba164def5f306dafe87c6a35385340bc0bdaf SHA-256: 5fd3a14fab56e306c9b9515b703c048b6bdc657dd532487546b067aaad14fc63
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be a lure related to a song title, suggesting a social engineering tactic to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=calling+your+name+by+young+thug PDF link annotation
    • https://jipidonano.weebly.com/uploads/1/3/4/3/134340070/296cde39.pdfIn PDF document text
    • https://runigofotizete.weebly.com/uploads/1/3/4/4/134433234/vorinekovugen_gowuzifazitil_fubojufeperuzuv_rumaraj.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/14da3.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/bd4e3b54762c66b.pdfIn PDF document text
    • https://sojomirolasa.weebly.com/uploads/1/3/4/3/134325131/walutagotiri.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/7702792.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/944d6491-fb08-43c5-b43f-8e6e9bd2c353/simonalavulixitunipirawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cadd04-ef17-432c-889a-d2ebaf489db8/anne_klein_luggage_pink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be1bff05-a34e-4eab-af07-c6c50e6b2793/green_arrow_loans_account_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961943bb-edc5-472e-a2bd-7ddc9684007a/luleraraxuzagotegifobop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57cbc16a-4063-470b-9e40-09c9c2346742/manual_ice_cream_maker_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b30a0d-d48b-47a0-a519-83e53b585c66/mebokiredogunijadirolunim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691af559-5e3b-449b-9b38-6cfec2417e58/nuvivejatenoz.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_off0000a81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA81E 5068 bytes
SHA-256: 9d2fac0ef8d8badaa6a47a9441f6d8a552bd2f82f0fdcbbcee50076f029ed19d
font_01_sfnt_off0000b932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB932 8948 bytes
SHA-256: 3888f204c86a0f7e23a5a95993e2d9632a749b6f366c6a26b4e3c151abbb3a81

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