Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b6098c39150a54…

MALICIOUS

PDF

42.6 KB Created: 2021-06-04 03:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 82356582a44b228dd664a0d20afefed8 SHA-1: 3a76022ac72e685c89a8d959e81115996f6cbf47 SHA-256: 09b6098c39150a54a21115c8abdb01b5dc335be9b225eb0f75f850bdfffa9887
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The primary lure is a link to 'free-mod-apk-coin-master-game-hack', which is hosted on a known malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/406889139/free-mod-apk-coin-master-game-hack In PDF document text
    • http://perpus.stihpada.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-tiktok-email-and-password_GM835599320.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/oprewards-free-robux_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
stream_004_off00004f29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F29 23924 bytes
SHA-256: 129897e74eb76876ae94668215f6ff38491bb3a30815b1e374d23d1ed4cd3c05
font_01_sfnt_off00008419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8419 18228 bytes
SHA-256: 94a160b3eebda81a774dce60345efae5de7f6df629fda5b11a26048b94d99866

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