Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadd429e5ed2ac56…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 11:12:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 02fa69d355ed1ac02a4283b32bee03bc SHA-1: 2d8cf0f7ad541f3b65a224e0b1a26993c4728f57 SHA-256: fadd429e5ed2ac567e6232f6a7572dfa209602d78f8732efbb582f55ae06e94b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and embedded links suggest a lure for game hacks and generators, aiming to trick users into visiting these malicious sites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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.online/app/479516143/minecraft-dungeons-free-download-pc-game-hack In PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/robux-adder_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.youtIn 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_off000055e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55E1 24944 bytes
SHA-256: a2da22377c05dfd29247fb16fe95893a07915d72a3b830c8b5d6942c55fa8cf0
font_01_sfnt_off00008ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDE 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00009951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9951 18872 bytes
SHA-256: 05183faf73e067548e32258fc58809d25a8fef905510eff8eab59b37bb03aee7