Malicious PDF — malware analysis report

Static analysis result for SHA-256 b572425eaa83014b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 03:20:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d8734cdee8aac6eabc6afc4d6f45e3c1 SHA-1: d90c03bf1212ce064b4784b6b6f69e8b65d61498 SHA-256: b572425eaa83014b2a89e5de850f777a0c150954403de95b62eaec29e97c13a6
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body and heuristics indicate a lure for free game items or cheats, often associated with password-protected archives to bypass security scans. The primary malicious URL identified is http://netcdn.co/app/431946152/hack-vehicule-simulator-roblox-game-hack.

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/hack-vehicule-simulator-roblox-game-hack In PDF document text
    • http://library.atim.ac.id/repository/doomspire-brickbattle-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-2021-xyz_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-bleach-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-auto-farm-bee-swarm-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-someones-roblox-account-with-inspect-element-android_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-cheat-engine-august_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-headphone_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/card-code-pw-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-roblox-dragon-ball-rage-android_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-password-or-survey_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/vortexx-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/exploit-to-use-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-bloxburg-hackes-to-get-in_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_off00002f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F76 22328 bytes
SHA-256: a89a766f0e8fda80af83ad7488908fd50a176a33aee8760d9eadb9803b2c9f63
font_01_sfnt_off0000610b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610B 19580 bytes
SHA-256: 77da8052058bd0def0f744ddaa055cf28604ed05a38f52a292de32bfa633dc75

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