Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cee7721d41b5cbb…

MALICIOUS

PDF

48.7 KB Created: 2021-06-07 14:28:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 597344ca6ef114d20e87454eea9c588d SHA-1: c61ff95dbec0446dfbec28d2a028fe033a96c646 SHA-256: 7cee7721d41b5cbb66263407c4363c8e7529e655f6d6d20868eae1a167308c8d
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 redirector lure, pointing to a specific URL. The ML classifier also flagged the document as malicious. The document body, though partially corrupted, contains the same URL, reinforcing the lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/roblox-mm2-free-godly-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/pokemon-go-free-vpn-android_GM1094591345.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-and-coins-haktuts_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_004_off00005051.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5051 26040 bytes
SHA-256: adba848f8b69082aa3eb3719d249bf3b47080b086ddd1d19257cbd7653fdba17
font_01_sfnt_off00008cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000099e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E9 18884 bytes
SHA-256: c15356b4ccea28bbbd4543a8dc3d9ef0dd6ef7d10cecf3c35c2812e350e84076

Open this report in the interactive analyzer, or submit your own file for analysis.