Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c34afad90025240…

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 23:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8b786e41a0c7d01ae3ee11bf238eabdf SHA-1: 65a3561129dcb3c5068b29f6628ad0fc2edbca4f SHA-256: 9c34afad900252409d4ba80b7ef93abe8a44e0b7bc1b90c4361a9d5151a75574
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a game hack generator. The document body and heuristics indicate a lure for users interested in obtaining free in-game currency or hacks, specifically for games like Roblox. The primary malicious URL identified is http://netcdn.co/app/431946152/steal-peoples-robux-hack-game-hack, which is likely used to deliver a secondary payload or phish for credentials.

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.co/app/431946152/steal-peoples-robux-hack-game-hack In PDF document text
    • https://scraperite.com/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/roblox-hack-2021-forum_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-call-roblox-for-hacked-account_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/pepsi-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-admin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://scraperite.com/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-blue-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-to-change-you-name-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-roblox-toy-codes-unused_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/elemental-cheats-war-magic-roblox_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A3 22336 bytes
SHA-256: 3750053871a119c25c492d2213dcd26e9c766af59c528411b5bc0c623cb85c4e
font_01_sfnt_off0000645a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645A 19232 bytes
SHA-256: db9c3a2ad05532232fa47657c48b8085f0e69388fbdf469702d2f2fb4cebb49d

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