Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57d52ec17deb6e0…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 18:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a618d049b2664abd715fc99db1efbc90 SHA-1: 9410486547b1791cae813180b9d25456bd5dc2ee SHA-256: e57d52ec17deb6e05451f7306a48d399a7992e8f1516fcf2d39c123748524b96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, likely serving as a lure for game-related cheats or hacks. The document body and heuristics indicate a phishing or scam attempt, aiming to trick users into visiting the malicious URL, which is likely to host a payload or further phishing content. No scripts were extracted from this sample.

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/free-robux-sites-2021-game-hack In PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/who-hacked-my-main-group-chat-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/play-free-roblox-com_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-games-with-gamespasses-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-guess-the-emoji-cheat_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-wallhack-download_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-no-inspect-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/blue-boy-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/rbx-world-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hack-someone-roblox-for-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-pocket-edition-apk-free-download_GM479516143.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_off00003064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3064 22140 bytes
SHA-256: 5aa006bdc15eded20c2e9ecbc0405e6e93f9a64edcbd970d259629ffe85712b7
font_01_sfnt_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 19340 bytes
SHA-256: bf872f38d37b2489c3690af0fb3a59d21ccad535cade2ac40decd632f59a44ea

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