Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d0a3e8ccb012f7…

MALICIOUS

PDF

33.2 KB Created: 2021-06-27 13:38:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 6acd1036a30109854e89a41b090c92f1 SHA-1: f5d15be458a02039555c019cef99f15fa2db7a40 SHA-256: 47d0a3e8ccb012f7c803373de7687b4a4bf360b3424ecce828c09b904b141363
220 Risk Score

Malware Insights

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

This PDF document contains numerous links to websites and other PDFs that promise free game currency or hacks, such as for Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/how-to-earn-free-robux-on-phone-game-hack, is flagged as a malicious redirector. The document's structure and content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or malware downloads.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-earn-free-robux-on-phone-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/ldshadowlady-roblox-someone-hacked-my-acount_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/c00lkidds-roblox-hack-client-rc7_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-elemental-battlegrounds-gems-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-hackear-cualqiuer-juego-de-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/100-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/20210-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-and-tix-hack-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-game-hack-app_GM406889139.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_off00002d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D56 21516 bytes
SHA-256: 98d56b5f273fbe9a1a2c9d8a98a056f23e29119935daad50aa0ebee68ae7cac7
font_01_sfnt_off00005c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2F 19200 bytes
SHA-256: 88cd56ecdd7ced39baec82fe70e0e0ec8b6d10de0c7fc97b7d4914345504be63

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