Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2a5dd4bac26dcc…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 14:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 09ae54dda30bc08ad8cb4191370cb2db SHA-1: b6b41f6f1c1c7fc1c7cfd65ea49e617e0e4b8ebb SHA-256: 0e2a5dd4bac26dcc3c7fc245758c723062e9c15186d99d6a358bda27e4e2d8a8
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body, though partially corrupted, includes the same URL, suggesting a social engineering tactic to trick users into visiting a potentially harmful site. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/today-coin-master-free-coins-link-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-items-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-money-on-rocitizens-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-free-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/fe-hacks-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/cheat-roblox-unboxing-simulato_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-sex-hack-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-admin-commands-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-robux-free-fast-no-verification-or-survey_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_off000032c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C6 22732 bytes
SHA-256: 441841fa5ea572a59bd3f84da27cde23441cb64c1dff92fcfa60d6a9f62b15fc
font_01_sfnt_off0000658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 18524 bytes
SHA-256: 74fcec9b5b8e3ed7be054281063059b2d59d3aa90717e44aeddce615a673a04e

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