Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1a29d61d1919d3…

MALICIOUS

PDF

48.0 KB Created: 2021-06-08 12:13:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d133950fa45f61d8a7149f17814ddb2e SHA-1: 0b47eacc430995b8f6977adf4e4e6c42f895241d SHA-256: 3e1a29d61d1919d33495e53e0a0c86d5478a421290a485e0216532d24a7bd3f4
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1534 Credentials from Password Store

The PDF document contains a lure for 'free Roblox Give Card 2021' and links to external sites offering game hacks. The presence of an MFA lure suggests an attempt to harvest session tokens or abuse multi-factor authentication for account takeover. The document's content and linked URLs strongly indicate a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/free-roblox-give-card-2021-game-hack PDF link annotation
    • http://itbits.ie/images/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/pubg-20210-uc-price_GM1330123889.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/roblox-death-run-hack_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/roblox-jailbreak-hack_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
stream_004_off0000503e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503E 31224 bytes
SHA-256: 64aae979ac5fd093bf42d16c688a9261826d3734c23001842e3f21b6725270dc
font_01_sfnt_off00009701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9701 18988 bytes
SHA-256: 63683371c7b6b7b5082dcd34a2787041aa00cfc9061c154a0ad197b918c87f5b

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