Malicious PDF — malware analysis report

Static analysis result for SHA-256 562ae8ff781e3178…

MALICIOUS

PDF

47.0 KB Created: 2021-05-17 17:31:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b9dccf9de840453d4c1e824d79b338d SHA-1: ca2f80cb8c461548020d0e62d1f9e2696823c97b SHA-256: 562ae8ff781e31787f1937385bed96c65ac48b7298d111dbbcf6f465b86b081c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' redirector, a common lure for malicious sites. The document body and extracted URLs reinforce this, pointing to sites offering 'free robux' or game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a potentially malicious resource, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-roblox-clothes-for-your-avatar-game-hack PDF link annotation
    • http://maslabaou.com/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aa8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA8 26680 bytes
SHA-256: a39c8ebd0c93c9d176e6014fd21510abcc11e1f171ff929c3be4a3842ed30290
font_01_sfnt_off00008979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8979 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9364 18860 bytes
SHA-256: 1761c8fbdaafa52a42c2d9c8dd0fbea25e5bec314d4deea8139da4bd569234ce

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