Malicious PDF — malware analysis report

Static analysis result for SHA-256 502c80bf4c46d7ae…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 06:24:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 476b7f62151edcb05b0cec60567213d5 SHA-1: fe934915c8ccf13c2cf24e1d5a71fd1423844e61 SHA-256: 502c80bf4c46d7ae83f1055990e4dea4629d1ee74777219ea59d8a46a7c00fef
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body text also contains a prominent URL related to 'free Robux'. This suggests the primary purpose is to trick users into visiting a malicious site, likely for credential harvesting or malware distribution. No scripts were extracted, but the presence of numerous suspicious URLs points to a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/how-to-get-free-robux-not-a-scam-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-codes-2021-real_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_off000053fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53FC 26140 bytes
SHA-256: c17feb7f7312c680fc4fb5ffa0af51d328274e703451ce6c92cc0955ec7b4be5
font_01_sfnt_off00009066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9066 18768 bytes
SHA-256: 022361ef70d0601eb321de045a15355e0ef134abc2a3262f50e5e6000d82738d

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