Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed2fcf5e4352d35…

MALICIOUS

PDF

55.7 KB Created: 2021-05-15 03:56:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bb84fffc3acb62e7f77b5447b779e490 SHA-1: 524d719435ccfcd2196dfa353cbc21d3ee4e5571 SHA-256: 9ed2fcf5e4352d357b284f5e30bad5f6ad0e57d5c0ff1d3cf38a289111a11377
200 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, masquerading as "free generators" for popular games. It also displays a fake CAPTCHA to trick users into interacting with the malicious content. The embedded URLs likely lead to further malicious content or exploit delivery, potentially involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8407

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/coin-master-free-gold-cards-game-hack In PDF document text
    • https://pemadamapi.net/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC4 26348 bytes
SHA-256: e508606b51e97f576486470ea53c8d6bff274adb8b3f8e6377b3e84a91c97acd
font_01_sfnt_off00008b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B75 3232 bytes
SHA-256: c00676666f16d6fa30ee75c8bd7c52533b34953a9b4a2a7e2356d0329caa74c1
font_02_sfnt_off000096d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D2 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9F8 17960 bytes
SHA-256: aba9a61c61b61fea048b73d77d5e297f3d5a3a83c57e433c8854d820da1f91b9
font_04_sfnt_off0000caf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF1 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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