Malicious PDF — malware analysis report

Static analysis result for SHA-256 12106061c482d740…

MALICIOUS

PDF

57.6 KB Created: 2020-12-14 06:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c3f1594de239733a51e8ea455caf75a8 SHA-1: 47256ba6360d9b5503a6e22967c88f7c549764ef SHA-256: 12106061c482d740358975a73205cfee737f68c5c7bf3f7a324e871251eca51a
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are to benign-looking PDF documents, suggesting a link farm for SEO manipulation or to obscure malicious activity. The primary URL, 'https://traffset.ru/wb?keyword=yann%20tiersen%20sheet%20music%20goodbye%20lenin', is likely a lure to a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9576

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://traffset.ru/wb?keyword=yann%20tiersen%20sheet%20music%20goodbye%20lenin PDF link annotation
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/porakidikekekexaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385862/normal_5fb2a105e3b42.pdfIn PDF document text
    • https://sogutujugaj.weebly.com/uploads/1/3/4/4/134403955/1675375.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/suliterapame.pdfIn PDF document text
    • https://suvuzijovibalis.weebly.com/uploads/1/3/4/6/134660606/sivaxowuno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5fae7ea29915b.pdfIn PDF document text
    • https://guvodirafed.weebly.com/uploads/1/3/4/4/134475496/8adb28eecda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fcdf613169f3e188a7a5d55/t/5fd6dc979264095525e63826/1607916696028/10448419344.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/22510594959.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceeb86cd9942793f247bc4/t/5fd1aaa1ebc7ce75e8af8ce8/1607576227369/23562361783.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6f94ae9133927d90c202b/t/5fcf3d6064290b1c3dd30faf/1607417185986/amazon_jungle_wallpaper_hd.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59379ee0f32b874af56a/1606375735306/remeteleturoxelowav.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/sorry_for_the_late_notice_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/godrej_infotech_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/8618277763.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB252 5440 bytes
SHA-256: 01dd1d06e4e876a217a8670902436a798c0ed1d1cb27205708fe768faca5a387
font_01_sfnt_off0000c49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49B 10676 bytes
SHA-256: b3313cb9b52801ea1c063a609d3008138c9c44ef4fee558a913a6e4ac42de2b8