Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea43a28f98c1cb26…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 07:27:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3b216c6353b353abf5628868414d876 SHA-1: ecc2be32a36c4a166458192806217bff732ff7d9 SHA-256: ea43a28f98c1cb26735ab3fb1ec6d33b7b173846008c736d20617ad978269075
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators for game currency or hacks. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates these links point to known malicious redirector infrastructure. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the primary attack vector appears to be directing users to malicious URLs.

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.co/app/406889139/free-spins-for-coin-master-on-1-19-19-game-hack In PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/robloc-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/hack-for-champion-simulator-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/google-only-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-robux-for-free-2021-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/games-on-roblox-that-will-give-u-free-hat-youtubecom_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-crystal-redeem-code-star-wars-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/hacks-and-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/what-to-do-if-your-account-is-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-tix-and-robux-site_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/roblox-kkiller-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/robux-computer-hack_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
font_00_sfnt_off00003191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3191 22464 bytes
SHA-256: bfe637d252e89b510bb1e6dc3afad45e646ca90c1bcccd31df0b1a232dffe70d
font_01_sfnt_off0000637f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637F 18444 bytes
SHA-256: 86099eac99b49e045dc65b52a644e7fa6a75423fce7a6a7293a1bd171e463473

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