Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67d93fa19d0f4bb…

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 14:47:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e5c91d1a5dd4bb63fb30da19da59c39e SHA-1: 55a2dca1fe8fc5ee88c695ea1cd2aba10f365e86 SHA-256: e67d93fa19d0f4bbb183f74092250241d16f1a90093b09057f751418ed21e114
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free spins" to lure users. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-spin-download-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-spin-download-game-hack In PDF document text
    • http://asiasieja.pl/images/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-generator_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-hack-a-roblox-account-2021_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
stream_003_off00004b51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B51 25096 bytes
SHA-256: 3f08df455e3a16e3227bfc9036b84d21d5226ada379d568d1efa46ebc48f20b0
font_01_sfnt_off0000851a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 18464 bytes
SHA-256: d2049980b499644707db7dbba33f42fd49626c5cebf4a87bca5165b0820086b7

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