Malicious PDF — malware analysis report

Static analysis result for SHA-256 382410b6393fdd94…

MALICIOUS

PDF

216.0 KB Created: 2021-07-08 00:22:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 28c47b85a61f9b7a74591eeaf75763c1 SHA-1: 2e7a004414a35f90b63a1b2dac21ae7264724e4f SHA-256: 382410b6393fdd94c617d69a43d1e5005a4d4fb07bc379a486264ffcad320eaf
122 Risk Score

Malware Insights

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

The PDF file contains multiple links to a known malicious redirector infrastructure, disguised with a lure related to 'Pokemon Go' game hacks. The primary heuristic firings indicate that this PDF is designed to redirect users to malicious content. While no scripts were explicitly extracted, the nature of the embedded links suggests an intent to download and execute further payloads or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.2211

Heuristics 3

  • 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.
  • 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/1094591345/pokemon-go-free-7km-eggs-august-2021-game-hack In PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-but_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/hacker-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031eeb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31EEB 25576 bytes
SHA-256: 08c148c15a188e459252503dcc92f287c5e3a5c4a41128b8a0775632f90e4b99

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