Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a8cc67c9949346…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 15:56:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9e33654bcc3a8d1e01f41515444d289c SHA-1: d00a98fce842af9088f968f4d5b4ec0028af6029 SHA-256: f0a8cc67c9949346cb93b90c8fb5bbe61bcc215778ef64e88f74a9858dd8b1d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free generators, directing users to a malicious URL. This URL is flagged as a known malicious redirector. The document body and embedded links reinforce this phishing attempt, aiming to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/egg-finder-hacks-for-roblox-dragon-adventures-game-hack In PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/robux-tool-free-download_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-is-it-free_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-prison-life-v2-0-cheats_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-broken-bones-2-cheat_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/does-roblox-have-an-anti-cheat_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-hack-december-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-make-your-own-dominus-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/speed-hack-on-roblox-prison-life_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
font_00_sfnt_off0000324f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324F 22204 bytes
SHA-256: 16b7033e305c71cca758b01092a44c9d7f10a1bd8eebf87389316cdf9d0dd0c9
font_01_sfnt_off000063c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 19640 bytes
SHA-256: 08214cbd4fb5eacad05ba018e987588553f223985ff810577b932e58376c4bf2

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