Malicious PDF — malware analysis report

Static analysis result for SHA-256 561e16559608f288…

MALICIOUS

PDF

47.2 KB Created: 2021-05-11 13:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: af7cfe1b41a37918e43d765e861956d6 SHA-1: 608a0ffd75696567b64c16d02c7c6244cd2b964f SHA-256: 561e16559608f288c97cd3cb7875fcf1868d9e3b167d88bece711c5d270111a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically targeting users interested in Roblox. The document body and embedded URLs reinforce this lure, directing users to a website that likely hosts further malicious content or exploits. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to trick users into visiting a malicious site, 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-groups-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/100-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-cards-link_GM406889139.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_off00004a7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7B 27488 bytes
SHA-256: 75df1b2b399a21fe3f043eb4bec90ba154080c125856b9504e9395773b73a5a3
font_01_sfnt_off0000897c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9624 18264 bytes
SHA-256: 59dbfb19f503ab5ccde5afb48b0ebb207c820587c290c946a9c33262b394e3ff

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