Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b02bc8aa8f8b25…

MALICIOUS

PDF

47.4 KB Created: 2021-05-19 00:40:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9ded6730bd9604f94de0d0f5d11f2038 SHA-1: b92bbe2db4c95ad82f18210626170b300298c8a4 SHA-256: 93b02bc8aa8f8b25eabf2f1edac6e0a353a6cc3289209bab2cd34c9f97c45a54
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body and embedded link actions confirm the intent to redirect users to potentially malicious websites. The presence of a 'password-protected archive' lure suggests a multi-stage attack where the actual payload is hidden.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.xyz/app/431946152/free-roblox-website-game-hack In PDF document text
    • http://www.herricht.at/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/mcpe-download_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/freerubux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hack-2021-without-verification_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_003_off00004942.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4942 28372 bytes
SHA-256: 20a5125f558dcebe012cdaab45227530ecac2cd76d1db108354be05eab5d0e36
font_01_sfnt_off0000899e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899E 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000096b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B0 18372 bytes
SHA-256: 4f49704c3d2016fd3d486e698c5af7a9a5561cf776b84bb9dfcb3ffa887994c7

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