Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a7a603ca516e47…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 23:55:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0140cceac4600f89528ba1dd33e1923 SHA-1: 7c0cd9bbca5d8dc3d1a6bad642cc0cff4fc76ab5 SHA-256: 73a7a603ca516e472a7784378536940cb0916b95ba88c469f06bf21588d5d072
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for game hacks and free currency. The document body and extracted URLs strongly suggest a social engineering tactic to drive traffic to potentially malicious sites. No scripts were extracted, but the presence of malicious links and the ML classifier output indicate a high likelihood of a malicious intent, likely to deliver a second-stage payload or phish for credentials.

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/479516143/is-there-a-free-version-of-minecraft-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/pubg-uc-earn_GM1330123889.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.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_off000031f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F5 21892 bytes
SHA-256: 0487aaa5fed8dd6c879aefcc4b0ea23bf26cd006898095f67234a155de4a6c5a
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 18296 bytes
SHA-256: 555136c24bc0cc7b26cdfc0df6c1cd4857b7d13fa5348b764e09ccd429d35249

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