Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34e57764535f920…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 02:15:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3ce8f4fb6f2e469c1ef8264ddf63fec5 SHA-1: 36ba46dcef01056757f5905090f191e15020a75b SHA-256: a34e57764535f9200b3fdd1bb79e6c8858c301040045163cfa61677080517564
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary lure URL is http://netcdn.tw/app/431946152/hack-de-mad-city-roblox-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a phishing or scam attempt.

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/431946152/hack-de-mad-city-roblox-game-hack In PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/pubg-uc-gift-card_GM1330123889.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-hacks-lua-vs-lua-c_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-any-amernation-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-how-to-save-movies-for-free-roblox-action_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-hack-your-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-hack-ban-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
font_00_sfnt_off0000309a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309A 22328 bytes
SHA-256: 38eb7f63df074904a117dacd9f0386460b0fca9642673cf34136f1b5946c21c7
font_01_sfnt_off00006262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 19412 bytes
SHA-256: 9784df8a73f4637229c69db0476bbe50af2f7d869b4681b2e9a3d4be9064171c

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