Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1e3bfe9a5f9798…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 00:45:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 32a6f574ded0488ea68f2a195fa27081 SHA-1: 61dc740d588d501a07ace5f503980858a815c696 SHA-256: ec1e3bfe9a5f9798fd12a056b81fae37cfdf51b4300ae5e8b1c9cd8a5fb72f98
180 Risk Score

Malware Insights

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

The PDF document contains multiple links to external resources, including a known malicious redirector at http://netcdn.tw/app/406889139/download-coin-master-hack-apk-game-hack. The document body and heuristics indicate a lure for game hacks and free in-game currency, likely leading to the download of unwanted applications or malware. The use of a raw IP address in one of the URLs further suggests malicious intent.

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/download-coin-master-hack-apk-game-hack In PDF document text
    • http://110.232.83.89/slimsppks/repository/daily-free-spins-coin-master_GM406889139.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-simulator-free-model_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/can-i-get-banned-from-a-roblox-game-for-cheating_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-without-scams-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-kick-off-hack_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/moonactive-coin-master-free-spins-link_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
stream_002_off0000349c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x349C 23148 bytes
SHA-256: a5d4d5f50e5f4fee413c37656c42ec996380c372f9c67b2981fd15a4454c6be4
font_01_sfnt_off000068a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 18760 bytes
SHA-256: a9106ec8bdb2ef00eddd29af2fd5eb663302a9539c133b1226910953e26aec8b

Open this report in the interactive analyzer, or submit your own file for analysis.