Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19619d03a45562f…

MALICIOUS

PDF

41.7 KB Created: 2021-05-10 16:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 44fcfe72b93619b55be14ea392dc3de3 SHA-1: 693c6aafbd3824eb268854abd8301d7126231e68 SHA-256: d19619d03a45562f898a92a41e27010369aedea517305310ff4baa4c8dbe3f17
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure, 'how-to-change-your-roblox-username-for-free-2021-game-hack', points to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a phishing or malware distribution site, likely initiated by user interaction with the document's content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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-change-your-roblox-username-for-free-2021-game-hack In PDF document text
    • http://pwpyemen.org/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/moonactive-coin-master-free-spins-link_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
stream_003_off00004030.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4030 25640 bytes
SHA-256: 3456aa15c0f780d19f5921f6c7ff060b23f31f692619c535adbf0ad41cf4c464
font_01_sfnt_off00007c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 19944 bytes
SHA-256: 272cfab0daaaab9824a536a9c430cdc975267d1e82a4af54df010f86fd52179c

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