Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc588bfe78700fbe…

MALICIOUS

PDF

67.6 KB Created: 2021-02-15 09:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bcfa9c7dcaf0db98d33e6a58c1a80ed8 SHA-1: d67d15b5a7ff5d3be218ff1d6bb961f3fd82e31d SHA-256: fc588bfe78700fbe77de608cf2d326753f1077b14109eca0dd6968ccbaf80adb
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9710

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=como+puedo+facturar+mis+recargas+telcel PDF link annotation
    • https://noxerurivago.weebly.com/uploads/1/3/4/7/134767941/vowulobizarefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_601054f86f10d.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/igjNNie/62212165178.pdfIn PDF document text
    • https://tejemovifizak.weebly.com/uploads/1/3/2/6/132681066/rovufejebego_mabepivefuvu_zozamujutezola_virivotu.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/4ZjIV2C/gavalajikoforonigabiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386334/normal_5febc8fe76e91.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/5FcjabS/cloud_bread_tiktok_video.pdfIn PDF document text
    • https://kenemujawov.weebly.com/uploads/1/3/4/6/134645985/ligenitegisovomijuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_601104f4300f8.pdfIn PDF document text
    • https://mipadabu.weebly.com/uploads/1/3/4/7/134751654/sipizinoxegisu_sesawejox_viromerela.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/fzPdGcU/26506597629.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/bopuxosavubare/54419638543.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/54689564275.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/blade_and_soul_classes_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/99794088330.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/4174878136.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22B 5380 bytes
SHA-256: 1a12d27c078ad3b4de904193abbdd0234cd44da4b9c4290d5633e1313bce58f0

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