Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7352e8e8525770a…

MALICIOUS

PDF

35.8 KB Created: 2021-05-21 15:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a07d11e61ed3ec8a2d997263fd994553 SHA-1: 7a154dfaa0737d2e62aa459ab9f40a9ae8968154 SHA-256: e7352e8e8525770ab04864a5cdd0f819f30ea461ea0ea6b6ca7f766097547a2f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The 'SE_DOWNLOAD_BUTTON' heuristic further suggests a lure to trick users into clicking. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a phishing attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/minecraft-font-free-game-hack In PDF document text
    • http://hardbit.cn/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/free-robux-no-verification-needed_GM431946152.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
stream_002_off00003264.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3264 25652 bytes
SHA-256: 7ae6cfaebf68d9825868c84eb21486f2b0bbd512e49e4df72d0e68d935c57c2c
font_01_sfnt_off00006c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4C 17712 bytes
SHA-256: 48684535abb05df1a4efb13fd94135dee175bf6b61229e4eaa41ff3ed13e5a52

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