Malicious PDF — malware analysis report

Static analysis result for SHA-256 87776bdf4f7a51e4…

MALICIOUS

PDF

51.4 KB Created: 2021-06-09 15:23:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2c585a7f3e173b7abd4c94c02737dfb2 SHA-1: 0f32494aae61850e10ceb2c0a6976891c988a890 SHA-256: 87776bdf4f7a51e4faa750f64d43332f2e7758896f56add358a21ff0601ab634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically for a 'game hack' lure. The document body confirms this by displaying a URL related to hacking games. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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.tw/app/431946152/how-do-you-hack-roblox-adopt-me-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coun-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/spiderman-free-roblox-stuf_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-link-new_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_off00005338.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5338 37164 bytes
SHA-256: 7eb264f87f272aedb807df214cc08cc9060d4f1bd47250bc1611f63132b4e0a8
font_01_sfnt_off0000a352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA352 19468 bytes
SHA-256: 9e2297ccace4d4f65a72566b4f7b5b146636fcd8693a21b5c04ae123f46c683e

Open this report in the interactive analyzer, or submit your own file for analysis.