Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2a3b488c8dc339…

MALICIOUS

PDF

50.6 KB Created: 2021-01-29 10:56:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b1e3772a3e934081bef00df92eaddf6a SHA-1: 9b0763962ff411cf778199bf293fb56e1c6005f1 SHA-256: ea2a3b488c8dc339559546a0d39c4e6a4b944777cc9f279fe617f9cd39750311
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'story saver for facebook apk uptodown', indicating a potential phishing or malware distribution attempt. The presence of external URIs and link farm characteristics further supports a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7183

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 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://druttle.ru/aws?utm_term=story+saver+for+facebook+apk+uptodown PDF link annotation
    • http://gladkoe-telo.xyz/difference_between_mobile_wallet_and_apple_pay3oswo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479921/normal_5fffeda6bfba4.pdfIn PDF document text
    • http://qqkaxes.xyz/junojofabewanunidavesuxojr0a.pdfIn PDF document text
    • http://osmosiotzs.fun/calgary_transit_map8pmz0.pdfIn PDF document text
    • http://frut-tree.site/17482900846e3ooz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5fd821f6de683.pdfIn PDF document text
    • http://everydays.space/aix_java_60r5xr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5fe740c323cca.pdfIn PDF document text
    • http://com-signto5.xyz/epic_card_game_jungle_kickstarterb0ghf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370541/normal_5fcbde213b5f9.pdfIn PDF document text
    • http://helplnstagramcontact5087423.com/free_music_websites_for_schoolyvlye.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455396/normal_600fea675c6e4.pdfIn PDF document text
    • https://waneratamif.weebly.com/uploads/1/3/1/4/131436972/5380082.pdfIn PDF document text
    • http://nenidexixod.epizy.com/46850829304.pdfIn PDF document text
    • http://xijixabomama.rf.gd/80791317430.pdfIn PDF document text
    • http://pepebejawu.epizy.com/descargar_busuu_premium_apk_gratis.pdfIn PDF document text

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