Malicious PDF — malware analysis report

Static analysis result for SHA-256 0591327370a72550…

MALICIOUS

PDF

67.6 KB Created: 2020-11-17 14:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a7aa3be97056decaa4b6c140b3d4eaf7 SHA-1: b2abd31b2853031e6592358d2d10dca9101cd60b SHA-256: 0591327370a725500c8b617270dcdbc67b5fbd2d71efab297b1288525b425c09
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection further support its malicious nature. The primary IOC is the domain 'traffnew.ru', which is likely used to host malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9241

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://traffnew.ru/aws?utm_term=apus+browser+pro+apk+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87407c33db2.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/041e6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5f9dc8067f276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5fad8e99acfe8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8a5b36ee2da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5fabad183aa26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411245/normal_5fa915b3835b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f8b8ef793c3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5fa9cc6e3da58.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/zuxadol/metafisica_de_aristoteles_garcia_yebra.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC56B 5148 bytes
SHA-256: 64ecb09a8d86725ce5d6670304200eea543b2f24449a9262b442665e1d523d88
font_01_sfnt_off0000d705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD705 4664 bytes
SHA-256: 049ee640a1375cc91614ea096305a3a14e6cddc477700af3a02760757104c25d
font_02_sfnt_off0000e7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AA 11164 bytes
SHA-256: f7a39627103150385db67d56485f8d7347ea7585c23a124cfbbdc773b83bbb70

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