Malicious PDF — malware analysis report

Static analysis result for SHA-256 760c25ac632137c8…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 08:52:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a22eaa432011f736125eb4b13dfe7f10 SHA-1: f331eee732b28b6aa529faee1b0f26fa0d594db1 SHA-256: 760c25ac632137c80fe82131ca44bc04efd5b299aab710a8f28c05543586c54f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and potentially malicious content, disguised as game hacks and generators. The document body, though heavily obfuscated, contains URLs that likely lead to further malicious downloads or phishing pages. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to lure users to harmful sites.

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/406889139/moon-active-games-game-hack In PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-bobux_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_off00005084.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5084 25184 bytes
SHA-256: 74bd3e6232f4e26dfceb45b8afc3d2fde220032826e561aef10fa0684f2d932c
font_01_sfnt_off000088e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E4 17920 bytes
SHA-256: 6572202fb11b79787028deba1beb076b209f1779d589edab2c04e97f197d6ee2

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