Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b12ce0a5bdb7258…

MALICIOUS

PDF

43.7 KB Created: 2021-05-18 00:16:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7b5d83cfc339373d802ae3fefbfd2dc SHA-1: 74ca76f982f7cdd6940035a38a420c6a4e799eb4 SHA-256: 7b12ce0a5bdb7258b6083602e3f578d4037054e38b2ed90a9b7a13f45da19372
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that are flagged as malicious redirectors, specifically leading to 'free generator / game hack' lures. The document body and extracted URLs reinforce this, indicating a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/free-minecraft-bedrock-game-hack In PDF document text
    • http://stpc.it/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/app-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4996 29168 bytes
SHA-256: 816c238a75a612dbdb82e3409733f4f8b87729f2b4e40757a61617fb79767669
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 18268 bytes
SHA-256: d34bffa2112548f8729f10b9022dbaea9618b038b2dadf4195d892bf0ac95b27

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