Malicious PDF — malware analysis report

Static analysis result for SHA-256 162830ae1cc65615…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 16:45:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8747b9a85c438affdb9a47f362a723ed SHA-1: 25f9db351e86caf8ce1cb66ce442002993bd2277 SHA-256: 162830ae1cc65615f14401502047e2096940a45c7622c3d84fa6e66d632f464c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple external URLs, including one specifically flagged as a 'free generator / game hack' lure. The document body also contains similar luring text and references to game hacks. This indicates a social engineering attack aimed at tricking users into visiting malicious websites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-link-game-hack PDF link annotation
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/free-roblox-boy-clothes_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/roblox-free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/free-roblox-game-publicity_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://man1bengkulu.xyz/__statics/gudangsoal/files/coin-master-free-coins-amp_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
font_00_sfnt_off00003307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3307 22212 bytes
SHA-256: 9bc3eec3c945ee3d1b96b30542ada9e883ef217b998615df6f24c7503fb26dd0
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 18344 bytes
SHA-256: 01b831504896dfaed35d51ec646485350627a831fcdd06f8660974e1004fbd35

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