Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb98d8a2b3da9dc…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 14:01:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0c477cbb4bc4011d53946c5a38781cab SHA-1: 69e52ff4c475067a19dacc347a10aa9e71f693a6 SHA-256: 0fb98d8a2b3da9dce077d264f031762de14ed6ea93c10bc0fbcf752b1ba10e3a
180 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a malicious document, including a malformed stream and links to known malicious redirectors. The document body and embedded links suggest a lure for free game hacks or generators, specifically targeting Minecraft and Roblox. The primary malicious URL identified is http://netcdn.tw/app/479516143/is-minecraft-education-edition-free-game-hack, which is part of a chain leading to further malicious content.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.tw/app/479516143/is-minecraft-education-edition-free-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-hack-no-huan-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-codes-2021-not-used-no-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/comment-hacker-le-cataloggue-de-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/new-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-the-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/serverside-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-draw-2-how-to-get-good-drawings_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/fencing-reach-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-the-scary-elevator-red-key-locations-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-tool-no-download-no-survey_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/best-free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/where-to-find-roblox-hacks_GM431946152.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_off00003234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3234 22468 bytes
SHA-256: a05589edbcd1786d0c62a44f2b57754396a6e30f62ebaf77f2e3b3ed21c81fc6
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 18312 bytes
SHA-256: eecac33872f4bf99db25d0145d9acf2ab6d7270ffb9fefd56cdfeedcf9aa8f6d

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