Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5796e05605c353a…

MALICIOUS

PDF

58.2 KB Created: 2021-05-30 20:26:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d4d57140d7789abda748a02c3695ffbd SHA-1: c99c4020e5a2e72c374bb58b6ae216f024e3aadd SHA-256: c5796e05605c353a7581ae21682be8529c8e75dd64a826ed78afbd9f6708dda7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free generators. The heuristic firings indicate that the PDF links to known malicious redirectors and uses a lure for free game content. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3277

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.xyz/app/479516143/how-to-get-minecraft-windows-10-edition-for-free-game-hack In PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000057e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x57E2 28760 bytes
SHA-256: 33abc3af072fd8fa6fe118e0db01bcd8d3b9f56e46f09e013a31341b3d6081aa
font_01_sfnt_off0000986f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986F 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off0000b199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB199 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000c026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC026 18524 bytes
SHA-256: 758265ab9626b01b7f82acdeb793963e34ce825989d987f26b8b838bd6c44d94