Malicious PDF — malware analysis report

Static analysis result for SHA-256 487cac1945a1bf17…

MALICIOUS

PDF

62.3 KB Created: 2021-02-25 06:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4850f151920a78567bafcf6bcf6e40f2 SHA-1: 8c65200cc606b8de73644f3f010b0dbbe68d5975 SHA-256: 487cac1945a1bf17401956df2ee7a56a9ab74d044c8df5da08ffdef581c6fd2e
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file functions as a link farm, directing users to multiple external websites, one of which is identified as a malicious redirector. The primary link impersonates a search result for 'how to get a private detective license in arizona' to entice clicks. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8564

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://yafferge.ru/award?keyword=how+to+get+a+private+detective+license+in+arizona In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_5fcc2760e952d.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/QehaA3r/43712540314.pdfIn PDF document text
    • https://cdn.sqhk.co/zifakepavax/hjcheYr/wehrmacht_us_history_definition.pdfIn PDF document text
    • https://jowetetezuvam.weebly.com/uploads/1/3/4/7/134717416/miruguzo.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/ojbniiV/kasokarukovataforeto.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481275/normal_5fcae7e2e43d1.pdfIn PDF document text
    • https://cdn.sqhk.co/keserina/a54jggS/munchkin_match_magic_home_building_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/danopefasuf/hfiiI49/84527506785.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/SygdZmy/xifiwot.pdfIn PDF document text
    • https://cdn.sqhk.co/fufowomusixi/igsgffi/86962174163.pdfIn PDF document text
    • https://fobolobal.weebly.com/uploads/1/3/4/3/134317950/912376.pdfIn PDF document text
    • https://cdn.sqhk.co/notigagamu/VggjbtF/tasub.pdfIn PDF document text
    • https://tazipapanora.weebly.com/uploads/1/3/0/7/130776418/8073962.pdfIn PDF document text
    • http://ludugomawetus.22web.org/aol_mail_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_60291e7c94334.pdfIn PDF document text
    • http://sewexojin.rf.gd/mobobopijawozaxeragujuw.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/peaky_blinders_season_2_index.pdfIn PDF document text

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