Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ed7246103f8e08…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 10:42:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 68fd0b888bde2a5bb5d57cdd5209c3ca SHA-1: 596ba56e225278f25c596faca0e77988be63a570 SHA-256: a1ed7246103f8e08853d8e9c0c716dda27a31fcf3279faf37294f45d63f6de7b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links designed to lure users into clicking on offers for free Robux or game hacks. These links redirect to malicious infrastructure, as indicated by the 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristics. The document body and embedded URLs reinforce this lure, suggesting a phishing or scam attempt to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-gift-cards-game-hack In PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.polbangtan-gowa.ac.id//repository/minecraft-auto-miner-hack_GM479516143.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_003_off00004aa9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA9 29920 bytes
SHA-256: 1d05463036321e32b04726ee77d188e62187651d8d66fcf5ad3c330685055ae9
font_01_sfnt_off00008daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAF 18804 bytes
SHA-256: db707177e1a0df533614fd289cf2b470ee37edf039339bb568c3977480a042bc

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