Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b4a519f7017d6fe…

MALICIOUS

PDF

47.9 KB Created: 2021-05-15 03:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c850a2c002077025f95167075485eae8 SHA-1: ee0115cc9a1c17acfa38a084b9f480304671ce36 SHA-256: 4b4a519f7017d6fe9b90f08c0dc5f207e94213c20421f09c3169a9370b8df239
82 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 0.9013

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/431946152/roblox-no-download-hack-game-hack PDF link annotation
    • http://olesya-chagovets.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://olesya-chagovets.com/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://olesya-chagovets.com/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004665.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4665 28384 bytes
SHA-256: 099a9f184dfd4511f731ec2cce4669d254a51be2c9d9f4d95f8c7ffa0fc747d2
font_01_sfnt_off0000860e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860E 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off0000977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977F 18688 bytes
SHA-256: d5d7cfea6fb7c102685ba8f1dd19dd1f71835ac40da00045e859a47e2011ef1d

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