Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b7577654bdfb11…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 04:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 270707792c364e93ec46416619391543 SHA-1: 46ff5ca1fcdc87a02b6d5a26e08d53976280b099 SHA-256: a0b7577654bdfb115dded0cf8f05ff34bde5bb3e7f5550777fb2c3c2bb90e616
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is http://netcdn.tw/app/835599320/how-do-i-get-tiktok-for-free-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/835599320/how-do-i-get-tiktok-for-free-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/ariana-grande-break-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-robux-by-doing-surveys_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/earnrobux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-ancient-erath-cheat-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-meanie-man_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/admin-scirpt-hack-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-game-cheats_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheats-on-natural-disater-survivle-roblox_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
font_00_sfnt_off00002f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2F 22576 bytes
SHA-256: 32b348749204469ec59971d0bca48e69b1db5120a98988d7043529c2c9987522
font_01_sfnt_off000061c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 18304 bytes
SHA-256: 4938701dbf408e9072d3358cc6fafc7467a72b7afdd8e5665974615f806fa15d

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