Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d178cb4625c85d…

MALICIOUS

PDF

41.2 KB Created: 2021-05-12 23:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8537dbca83e699f01fcec798872c3635 SHA-1: 0ddcabb4a4674781b5b5519cb041070f9eb9be88 SHA-256: 70d178cb4625c85d8e4bf522d5d70fbbf7d1fef3c074feca8d6c72851d81786e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a known malicious redirector. The document body and heuristics indicate a clear intent to trick users into visiting malicious URLs, likely for further exploitation or malware delivery. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • 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
  • 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://netcdn.xyz/app/406889139/get-free-spins-for-coin-master-game-hack In PDF document text
    • http://promotion.si/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-computer-hack_GM406889139.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
stream_003_off000047f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F2 24632 bytes
SHA-256: cef3fd68127a92542d47aee255c68ecfeffd15130ddb938ec04d27d31ad21e2c
font_01_sfnt_off00007ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFA 17884 bytes
SHA-256: 9bf67b2ee87cdcf37b0aaa2d40e70a5836dac1840b9be614bff5a3f1a0edfaa7

Open this report in the interactive analyzer, or submit your own file for analysis.