Malicious PDF — malware analysis report

Static analysis result for SHA-256 582bb70eee5544c0…

MALICIOUS

PDF

24.1 KB Created: 2020-10-13 15:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cd6d19b279926470694e2135b93a1c33 SHA-1: 9a4d166195ce888cd323be89d2cea9986cd5fee6 SHA-256: 582bb70eee5544c0216f58e822bd5457d1cfc320c28c7019c6239ef5a55b1a57
122 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to external URLs, specifically identified as a malicious redirector. The document body text also contains a URL related to downloading software, suggesting a lure to trick users into downloading malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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 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://gettraff.ru/strik?keyword=descargar+plants+vs+zombies+2+apk In PDF document text
    • https://site-1042604.mozfiles.com/files/1042604/59824492461.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/salopesaxefe.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/jubalasobevugadibubaton.pdfIn PDF document text
    • https://site-1039828.mozfiles.com/files/1039828/gapodiralufopodevoz.pdfIn PDF document text
    • https://site-1043664.mozfiles.com/files/1043664/60468989776.pdfIn PDF document text
    • https://site-1040434.mozfiles.com/files/1040434/83959437962.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/53982537117.pdfIn PDF document text
    • https://site-1041950.mozfiles.com/files/1041950/77113680181.pdfIn PDF document text
    • https://site-1038608.mozfiles.com/files/1038608/50966846610.pdfIn PDF document text
    • https://site-1039437.mozfiles.com/files/1039437/xedimimimawovifivux.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/maromagal.pdfIn PDF document text
    • https://site-1038583.mozfiles.com/files/1038583/57027795616.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/best_buy_wireless_router_modem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6875/4594/files/donut_ghost_house_secret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/67631325848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/5096/9529/files/taletuladaxozivow.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_off00004d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D08 5484 bytes
SHA-256: 72bc9497277f755b33f4a450344de13bf3773dbf4dd2f96e7f0c886857832d4b