Malicious PDF — malware analysis report

Static analysis result for SHA-256 072444f439ff3adb…

MALICIOUS

PDF

67.6 KB Created: 2021-02-09 22:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6e177067cbd9d1d18ba679342be7f817 SHA-1: cf7578f624a97bba39b2edd7ccb138137602819b SHA-256: 072444f439ff3adb01a593091599cfc09721b285015f8dc27b43e18ae6f1df60
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 identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains a large number of external links, many of which are SEO-optimized, suggesting a link farm or redirection scheme. The primary URL, 'https://baarspo.ru/aws?utm_term=aprender+a+tocar+guitarra+classica+pdf', indicates a lure related to learning guitar, likely to deceive users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9704

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://baarspo.ru/aws?utm_term=aprender+a+tocar+guitarra+classica+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488804/normal_6000f4d37eb9f.pdfIn PDF document text
    • http://boxidodo.22web.org/chrome_freezes_at_100.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414169/normal_5fe3edc525192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_601eb93d54869.pdfIn PDF document text
    • https://kupifima.weebly.com/uploads/1/3/0/7/130775493/bofugotixisivas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_600032fdc1a8a.pdfIn PDF document text
    • http://biteroz.iblogger.org/85481774139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483855/normal_6011391ae1d8e.pdfIn PDF document text
    • https://bawovaleza.weebly.com/uploads/1/3/2/6/132683088/pajebati.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447097/normal_600237ed2181a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xojokigelofa.rf.gd/cyber_security_insurance_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/angular_6_template_example.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/82275832090.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/fast_buds_lsd_25_grow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/baby_shusher_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/tegukidi.pdfIn PDF document text
    • http://katosijuxemewex.rf.gd/50436741227.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_off0000f5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F2 5312 bytes
SHA-256: d43d650c26f0158283c0d132fccfe163c2338eceae9e9445ee2ef7e5f298fb6b

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