Malicious PDF — malware analysis report

Static analysis result for SHA-256 e201fc850553cc0a…

MALICIOUS

PDF

82.9 KB Created: 2020-12-20 20:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53617b33597b48a419e26d5697806cc9 SHA-1: 19d058bb7e82a15be237a993f5d4f667bc5d971e SHA-256: e201fc850553cc0a4ac01dd221e91f28f095aedc93322b174c1ba3b5c9797977
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://trafffe.ru/strik?utm_term=the+incredible+human+machine+worksheet+answers
    • https://setekonireza.weebly.com/uploads/1/3/4/1/134131298/4026828.pdf
    • https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/2589496.pdf
    • https://mubagaluzab.weebly.com/uploads/1/3/4/8/134874300/5979233.pdf
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8a92d0eafdf.pdf
    • https://farukipem.weebly.com/uploads/1/3/4/4/134473356/mogirikezidexo.pdf
    • https://cdn-cms.f-static.net/uploads/4427501/normal_5fda8e5d4bcf9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5957a641-a6cf-4847-80dd-e6d6f0c7a057/mupaxo.pdf
    • https://uploads.strikinglycdn.com/files/29c7b4e7-8e6c-4621-83e1-19dd3df91b64/biofluxe_keto_300_mg.pdf
    • https://uploads.strikinglycdn.com/files/a21309db-d347-44d9-a7da-d8033d14e311/41634133440.pdf
    • https://s3.amazonaws.com/zetubakuz/video_er_for_facebook_and_instagram.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de37.bin
9d168b66cf18db2bc285e2154398e515a969dd3c610d0bafad3a26c80114a0b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE37 4264 bytes
font_01_sfnt_off0000ed8e.bin
aa51f3c0b0dc66bb68fa7d1ff3dca4af09d83a78bb64e67d68deef30cb427da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 5424 bytes
font_02_sfnt_off0000ffdf.bin
f436207e5f59cbe322595409f5db96e2a27fb65c3e5449d0e1dc2ea6c3e9c428		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDF 13040 bytes
font_03_sfnt_off000128f5.bin
144d205111f7f1998237345998535d078787389e8db50df2c8a41a219cc19a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128F5 16120 bytes

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