Malicious PDF — malware analysis report

Static analysis result for SHA-256 de274ed8aa8add5c…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 08:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b6058a2e42ee478ae6ae570f98db0285 SHA-1: a0bca5fd31bab7ab106eb3ad1c4f44108a57b355 SHA-256: de274ed8aa8add5c9b307aaac1992b1b48f5448fe9270dbff4bd951f36880d31
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to game hack websites, a common lure for malware distribution or phishing. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs suggest the document's primary purpose is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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/406889139/how-to-get-more-spins-on-coin-master-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/pokemon-go-hack-free-coins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/without-pokemon-go-free-account-2021_GM1094591345.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/without-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.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_004_off00004ffe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFE 25172 bytes
SHA-256: 99974be3b07b66f8a542ffa28dd604ba7978af89a1dc51b1099748f083657f1f
font_01_sfnt_off00008898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8898 2824 bytes
SHA-256: a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa
font_02_sfnt_off00009235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9235 17884 bytes
SHA-256: de91416e6b384e5a558a076d1e2f388e6fc1e0e297337a4c3940144a2f24ea94

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