Malicious PDF — malware analysis report

Static analysis result for SHA-256 f39e0b2d9cea32fd…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 15:49:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f072e7a2bf307bb8d35a0ec357b1842b SHA-1: c6e8e8aaa512d22f867740c5020df523db7ec527 SHA-256: f39e0b2d9cea32fdaca5e96be92dedbc0a79cf08f328dee2d9d39b4013356ad2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/431946152/how-to-cheat-for-robux-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/free-games-like-minecraft_GM479516143.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-lobby-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-a-free-gear-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/shark-attacke-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-pal-hair-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-emotes-free-link_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pubg-uc-telegram_GM1330123889.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-obc-for-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-catalog-items-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-studio-apk-free-download_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-shinobi-life-free-spins-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hacks-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hack-2021-no-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 23572 bytes
SHA-256: c599a2dcce562ad69af9695b4a2761a67b2d9a953683f687c69c52c9bfe22336
font_01_sfnt_off000065c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 19148 bytes
SHA-256: adfde385a99e1d8f0b129e8541d98d7704b350ddd337a5b31f27f1eac1b61f13

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