Malicious PDF — malware analysis report

Static analysis result for SHA-256 21214fb791c36d0d…

MALICIOUS

PDF

50.6 KB Created: 2020-11-12 14:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 594385a07e840efc302c551217941fdd SHA-1: 3652d2f0b4f681e1ec81fc2572c44ff4310febda SHA-256: 21214fb791c36d0d3a6a8c64b20e85b4124be46b9224b35f7d5a9b2551fa1848
154 Risk Score

Malware Insights

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

The file is a PDF document that contains numerous external links, many of which point to suspicious domains and are likely part of a link farm. The ClamAV detection and ML classifier indicate malicious intent, specifically related to phishing. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' strongly suggest this document is designed to redirect users to malicious sites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9494

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=comparing+decimals+worksheet+common+core
    • https://dolevepi.weebly.com/uploads/1/3/4/5/134587457/xijozazulupupegogol.pdf
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/9912043.pdf
    • https://jetasiduneka.weebly.com/uploads/1/3/4/5/134586997/01d0c8b0f4e2b3f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/faa6820c-b29e-4bd4-852f-fbe2ddf5f592/81424436711.pdf
    • https://s3.amazonaws.com/ladojenefe/96959134705.pdf
    • https://s3.amazonaws.com/dudurat/63896076782.pdf
    • https://uploads.strikinglycdn.com/files/4eb383df-e487-4196-b440-e9ab8829a5b0/bopuletusabarudewati.pdf
    • https://uploads.strikinglycdn.com/files/e537f808-6b85-4eb1-b412-8b159d4bd366/jolees_easy_image_transfer_paper_dark_instructions.pdf
    • https://uploads.strikinglycdn.com/files/12b590f4-2beb-4acf-9405-69702c5f234d/trxye_full_album_download.pdf
    • https://s3.amazonaws.com/mubemutolewe/60586063205.pdf
    • https://uploads.strikinglycdn.com/files/f3d7357f-8406-4a09-9a3a-1b28ff1ab382/gekuwosizujorat.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8a2.bin
22440ae7e1999b57c72e02b8dce39d66d461a34a2afcbf0a4194a1a8d4ab8293		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A2 5548 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.