Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c16b7c4fa1a21b…

MALICIOUS

PDF

61.1 KB Created: 2020-12-28 08:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8d720fe87b71032218600a84ce3e9326 SHA-1: 2f8f0089b6dac50eeda4250dba025bce26c46be7 SHA-256: 70c16b7c4fa1a21b029563837a327a107374c46c1ee9308e58544496e2712b58
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection scheme. One of the embedded URLs, 'https://trafftec.ru/aws?utm_term=assumed+name+form+meaning', is particularly suspicious and likely serves as a lure or a redirect to a malicious site. The PDF structure and the presence of numerous external links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7613

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://trafftec.ru/aws?utm_term=assumed+name+form+meaning PDF link annotation
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/7241951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414489/normal_5fe24ab01d8f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f918f3e48ef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379471/normal_5fb2ed961fa85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_5f90f0dd41c0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_5f8fefee45c12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_5f8ffa33188dd.pdfIn PDF document text
    • https://namosupegu.weebly.com/uploads/1/3/4/3/134313644/wuzifi.pdfIn PDF document text
    • https://gipumoku.weebly.com/uploads/1/3/4/7/134710759/600c40085.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/tugabijenovili/mojonelisadizamelig.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/wuwukib.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/84020775243.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD709 5184 bytes
SHA-256: 8985acc51a6e8ab7808dcd7408d5d8d2542f4d6c2892cef2c1d9266c2630cce0

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