Malicious PDF — malware analysis report

Static analysis result for SHA-256 090eb427f5fba9b2…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 06:28:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a58dbbffbcf2f25a5f9dea0524114b4d SHA-1: d8b011694e8461ceebb257e05a62de3ae66f0fad SHA-256: 090eb427f5fba9b290e0b0df018b4d303d7ed2529e560b5a395dc5617b5567de
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 'free generators' and 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/406889139/haktuts-coin-master-free-spins-2021-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or further malware delivery.

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/406889139/haktuts-coin-master-free-spins-2021-game-hack In PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-mac-hack-2021_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/robux-survey_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-jump-hack-script_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast-2021_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-hack-working-2021_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/flame-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-create-texture-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3474 22884 bytes
SHA-256: acebd4b46ee5f4c9d60d916b91d2a0dd5958d9ed31ad0ef537186034a93887f8
font_01_sfnt_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 18884 bytes
SHA-256: 419a54345942d61df1c2508925993529a2deda544c7f32f326dbec5b819008ad

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