Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a00ad1b2a107f8…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 09:43:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e72a19b94f5f249077e6e5b30f8a80bd SHA-1: 8c27dcb89cdbfe7378e75de0f1755006807f64c7 SHA-256: e2a00ad1b2a107f8de3374828780132daec983cf1b8c3451d0f9879e00877251
160 Risk Score

Malware Insights

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

The PDF file contains multiple links to a known malicious redirector, masquerading as a 'free generator / game hack'. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to deliver a secondary payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/free-bedrock-minecraft-game-hack In PDF document text
    • http://library.asih-husada.ac.id/repository/tiktok-free-fans-cheat_GM835599320.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-survey_GM431946152.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_off00005565.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5565 24552 bytes
SHA-256: cfa1984a317e2fec0f71446e31a43234ed853ab536c2a8a13f1e13c02982b409
font_01_sfnt_off00008d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D02 2892 bytes
SHA-256: e0a0e7499c3dd10c5114bd1538d6e258e6cb3acdd4f79d9538668087a4bdd2cc
font_02_sfnt_off000096eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EB 18268 bytes
SHA-256: 05ed720d8c36cfe0e57c7fbe1498521d5bd0f1bc1658fa5d78b5dc7504aada24

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