Malicious PDF — malware analysis report

Static analysis result for SHA-256 97935bdaff4c331c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 03:27:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e456485110a7f70c4f60099bcc37a8c4 SHA-1: 3ada1add7066cad94b93871126ba3414827771c4 SHA-256: 97935bdaff4c331ca37e04d89a6ed449c9ac2eb30a55db38c21a1fd50b99b949
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link, http://netcdn.tw/app/431946152/roblox-hack-me-game-hack, is identified as malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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/roblox-hack-me-game-hack In PDF document text
    • http://library.persadabunda.ac.id/repository/hacked-jailbreak-roblox-with-no-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-card-codes-live_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/best-level-7-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/pokemon-go-free-kr-hack_GM1094591345.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-roblox-to-get-robux_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_off00002fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA3 22568 bytes
SHA-256: f549d00cdcd55d5c85df4aa07c4a753a548a4ccc47833d6e1629ff1e48d9aa63
font_01_sfnt_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 18852 bytes
SHA-256: ae5bbd1016d3eca5969145279625dbf0af4bdaae54505d1f649a6545bf5fde29

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