Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc04dbe182f64c3…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 09:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: eda62b32c2e5323517e97f5b6e3f17ff SHA-1: c391a4840226b96c2d5c8e9bcd1ab7d8d4ccb6d7 SHA-256: 1dc04dbe182f64c3c994104746ade2106f34d52daf33c4964b5f27e0cc9eaf80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and infrastructure, specifically promoting "Coin Master" hacks and generators. The primary link, https://netcdn.online/app/406889139/coin-master-hack-injection-game-hack, is identified as a malicious redirector. The document's content and embedded links strongly suggest a social engineering tactic to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-injection-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-human-verification_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_off00005186.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5186 29764 bytes
SHA-256: e851c8f0fb3ab0f4cd5a7e9aa081697f487821ee21dae7b0beade19c3002fb59
font_01_sfnt_off0000906d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906D 17904 bytes
SHA-256: e2ecece8bed95e57b3476d6fcf28d44a2eaa01b2bbba7ca5de9533271a3d1e36

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