Malicious PDF — malware analysis report

Static analysis result for SHA-256 094f609d6002dd66…

MALICIOUS

PDF

87.6 KB Created: 2021-01-06 21:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d159a27a74c932719169afa7a195c225 SHA-1: f7d8be1c5a2aae601db339a8960654a3ab6996f8 SHA-256: 094f609d6002dd660184cbdb932f7ea616f831ef99cbdad800f5222a121e8f76
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 0.5352

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://trafftec.ru/aws?utm_term=lagu+bleach+opening+4 PDF link annotation
    • https://metubunotawe.weebly.com/uploads/1/3/4/5/134595280/2c13a6c830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415327/normal_5feb6904cd0e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371524/normal_5fe2e3536d193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5f99e7789ec1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/jiwisi/dknight_magicbox_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/neat_handwriting_font_practice_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9602f1-64c8-4e4c-8867-d988ca8c8228/22920850980.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/nigagenoxomizawepibumov.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/gexisupukimix.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C05 15704 bytes
SHA-256: f600a5c52eb71baac3030452d6a96c3bafe901a11324dafa8e585c0212963514
font_01_sfnt_off00013ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE5 5092 bytes
SHA-256: 4d99feeafb95fbfc48245a41ecd80069afa00b8f69d89c9d184efeb953db79c0
font_02_sfnt_off00015032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15032 6064 bytes
SHA-256: 181683cfd5afb868ba869bd45ec5e988da6cff4800f32eb96d2df9b350e42f98

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