Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b60dfbe6b9f8247…

MALICIOUS

PDF

82.6 KB Created: 2021-03-02 23:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 855ca9c82854e821b2799fe5edf3e27c SHA-1: 4db651e12f11afad5af044f172121aa010569b5e SHA-256: 1b60dfbe6b9f8247935de8bd96e0b78c3b299267bd6cd599b1c8679eba02dbf5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.9544

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=the+prince+and+me+3+watch+online+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460233/normal_5fcf475fc52ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490529/normal_600bfe1cc4917.pdfIn PDF document text
    • https://cdn.sqhk.co/fagijopi/dSQyyDN/3539435379.pdfIn PDF document text
    • https://zunelejodimoje.weebly.com/uploads/1/3/4/5/134526095/5a9bd17b91.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/whirlpool_gold_quiet_partner_iii_replacement_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366398/normal_5ffd5b4ec64ab.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/what_are_the_5_congruence_theorems.pdfIn PDF document text
    • https://mopokelam.weebly.com/uploads/1/3/5/3/135349304/a4826c1356301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5ff5a8dc82ed3.pdfIn PDF document text
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/kimawabo-nopagelo-basigabufa-popazebeso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427526/normal_6014d8904669c.pdfIn PDF document text
    • https://vigijamavo.weebly.com/uploads/1/3/0/9/130968937/janufatuge.pdfIn PDF document text
    • https://cdn.sqhk.co/pigalixow/alhKjjX/xarutid.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/zesotat/como_construir_techos_verdes.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/92513331517.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/google_sheets_if_background_color.pdfIn PDF document text
    • http://fiwofitobuz.rf.gd/android_sdk_install_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/41198128183.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C88 5420 bytes
SHA-256: f264edd8c84ab382b7c63f1601a253ec2fa9b3fa64301e2aced51bbd6521a8ed