Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd4a59ee03ceaeb…

MALICIOUS

PDF

73.6 KB Created: 2021-02-28 11:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 563d2580892c321959a3d6be6f3303b4 SHA-1: 4edf868fb71e9898e63ae2aa6406fdae1a138281 SHA-256: ccd4a59ee03ceaeb98a8d250819c0a945050bacb4fa7ded5d5a080426388a3bd
154 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as a phishing trojan and by a machine learning classifier. It contains a large number of external links, including a link farm heuristic firing, suggesting a malicious intent to redirect users. The document body, though heavily obfuscated, contains a lure related to 'The Crown Netflix cast season 4'. No scripts were extracted, but the presence of numerous external links and the phishing detection indicate a likely attempt to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9525

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/award?keyword=the+crown+netflix+cast+season+4 PDF link annotation
    • http://pexukakadom.22web.org/32649506116.pdfIn PDF document text
    • https://kulaxebide.weebly.com/uploads/1/3/2/3/132302774/gepimupodisedibiwako.pdfIn PDF document text
    • https://tugufotekaluxaz.weebly.com/uploads/1/3/4/8/134883762/woxiziran.pdfIn PDF document text
    • https://pujowuvorokom.weebly.com/uploads/1/3/5/3/135347933/batevoxilogag-divalakuxufaf-kimigaretapegis-rijase.pdfIn PDF document text
    • https://dazuzoboda.weebly.com/uploads/1/3/4/0/134017564/0cce312572d506a.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://s3.amazonaws.com/tutapaxi/rogabedesoladijaso.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/pdf_annotator_online.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/36775368936.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/27313195416.pdfIn PDF document text
    • http://vabizofolimise.epizy.com/12306709766.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/fogikemiwabakoz.pdfIn PDF document text
    • http://marilineme.epizy.com/zulabivojaduxirimos.pdfIn 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_off0000e5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FF 4956 bytes
SHA-256: c5d149bc37d0a021b30399a15a641f954fd405dc703e986af4ac552e77891ad9
font_01_sfnt_off0000f6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DE 10088 bytes
SHA-256: 63fa1423ed1fecad4f180ed175e2e660b05a2886d53141f7912dca7f65e846c1
font_02_sfnt_off00011982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11982 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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