Malicious PDF — malware analysis report

Static analysis result for SHA-256 e340771b1057c6bd…

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 14:09:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 814621b2c69c219688c1bafbe6b134f5 SHA-1: eac2a9916f71e71c138a5d69aeb1eaf908ab68ac SHA-256: e340771b1057c6bd34bc5daedc04cfcd1f5358721cddb3b66e227e5ca6a6dbab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The primary malicious link identified is https://netcdn.online/app/406889139/coin-master-hack-online-cheat-game-hack. The document's structure and embedded links suggest it is designed to trick users into downloading further malicious content, likely through a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/coin-master-hack-online-cheat-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000531c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x531C 27120 bytes
SHA-256: e3be9f336d893da5d67b30c164873b2ccd64cb5297fafe99f9aed2d8472126dc
font_01_sfnt_off000090d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D7 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A89 17956 bytes
SHA-256: 443aed1378757c773e02f5a5987283787609be462fae8ba99418116e4694aa7f

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