Malicious PDF — malware analysis report

Static analysis result for SHA-256 a718e7f62ba8ce78…

MALICIOUS

PDF

47.0 KB Created: 2021-05-11 02:24:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d57ac4d87000d9cacce7d98e0c28b4fd SHA-1: afd51e166338e8e9fab19d6a73d8223a74a150d1 SHA-256: a718e7f62ba8ce7868a629ad8313d18d4dc75ecc875bd79ea31a20f07801a3f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks or free generators. The ML classifier also flagged this PDF as malicious. The primary goal appears to be directing the user to download potentially harmful content from the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/master-free-spin-game-hack In PDF document text
    • http://samfora.de/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/robux-miner_GM431946152.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_003_off000048f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F4 25604 bytes
SHA-256: fa11319ced89019c18521998c1974ef421f0ef53179fbb76158ed7dc41011050
font_01_sfnt_off000082a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off0000972f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x972F 17744 bytes
SHA-256: f2331a3c380b29fa6924a7d98cc121391afa4585b22bf6708bddf5542bc1013c

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