Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12e9391cf363b1e…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 08:30:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 200faf4aee260b1ab820e534c87086e5 SHA-1: 0c4d19394ad0b7af4b682419ae659318ef2f13ef SHA-256: f12e9391cf363b1e6f40a8fe9ce7e21204dfd8f4e01316c1272ac27df9a46739
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful websites. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.
  • 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 https://netcdn.online/app/431946152/script-fly-roblox-hack-game-hack In PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-without-verification_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_004_off000051b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B9 24556 bytes
SHA-256: bd3fac8c8a203522dde535d3ee7bad467c6d9d8a8f107ca58ae4d95360d51a7c
font_01_sfnt_off000089f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 18924 bytes
SHA-256: 9076309cc39380f786c06c42652bdfb66007ab0387dec5bc9c8a91643de110af

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