Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a14912f0a9bd994…

MALICIOUS

PDF

45.9 KB Created: 2021-06-11 12:12:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2cf721d244d46489020eee8239fefdcc SHA-1: d8cc7178313c3dc1d33d877e9266479d4c705d9a SHA-256: 5a14912f0a9bd994665b6e37956536391bc8710e80d6393a0de6bbc86c58dbe7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, that promise free in-game items or hacks. The document body and heuristic firings indicate a lure for game-related cheats, likely leading to a phishing or malware download site. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-hack-in-entry-point-roblox-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-a-free-group-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/master-coin-free_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-codes-2021-september_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-roblox-accounts-in-game_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-redeem-codes-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-items-from-roblox-not-on-avatar_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
stream_004_off00004ff6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF6 26632 bytes
SHA-256: 7604b4bebbe178351c2daf3f99397ba63c489d223261edb265741ed3675405fb
font_01_sfnt_off00008f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F22 18904 bytes
SHA-256: 2110d67b8cef5a284d5e8df23fa85d2507d2d9898f1b0c65f45c146ec37f7873

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