Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d79b694656181a5…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 05:16:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e3acca2a81a8f51c1c6bf4ef18cb8ee4 SHA-1: 08d265082608043e3b1673053d9139ec27732634 SHA-256: 6d79b694656181a5df12ea39a96ebcb8e1c9c6bfd74994a021d1549f7f292d6f
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that are designed to lure users into clicking on them, disguised as game hacks or generators. The primary URL, http://netcdn.co/app/431946152/how-to-get-free-rolls-on-roblox-elemental-wars-game-hack, is flagged as a malicious redirector. The presence of a 'password-protected archive' lure suggests the document is intended to bypass security controls by encrypting a malicious payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-get-free-rolls-on-roblox-elemental-wars-game-hack In PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/hack-my-boyfriends-roblox-account-back_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/guuudd-info-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-free-clothes_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/hacking-laurenzside-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-robux-on-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/a-friendly-guest-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-ears-roblox-hat_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-things-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 21948 bytes
SHA-256: 765c5618cbd84a72c87794446bc7fe372e6d44864421b67a6a692fbd43e2ff9b
font_01_sfnt_off000062f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 19376 bytes
SHA-256: f385fc5a5a6f6490507f1a03e40e7edf4021152c1d8aed8d8421550fa27a9c9f

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