Malicious PDF — malware analysis report

Static analysis result for SHA-256 777adb80271d7f1f…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 08:34:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f77ae34b37d4ce1eea213afa1305d2b8 SHA-1: b9f7ed82e0b1533e725b875ae847e2a1ab5258c3 SHA-256: 777adb80271d7f1fe377d423bc4cee9fcf5ddc3097e90719a621eb8810bac167
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings indicate that these links are designed to lure users to potentially harmful sites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest an attempt to drive users to download further malicious content or engage in phishing-like activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/roblox-cheat-engine-how-to-give-yourself-a-gear-game-hack In PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-december-2021-cheat-engine-speed_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/hack-para-roblox-hospital-roleplay_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-spins-for-coin-master-2021_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_off00002c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2D 22528 bytes
SHA-256: a1bdd7cded1357d09bd006209fdc47d148b8fb26597e9d5ebbd66e576925412e
font_01_sfnt_off00005e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E37 19456 bytes
SHA-256: 5dfbdedf9128dbaf80b0831fb68601e375de7db99ccec7a76d84bbdfd7018222

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