Malicious PDF — malware analysis report

Static analysis result for SHA-256 72aae13624be7381…

MALICIOUS

PDF

40.1 KB Created: 2021-05-21 23:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 542b14e2478dec99fb95a1ebca2c8173 SHA-1: f8c3dd4f93949b10dcb270ecc2389fdf16cb3566 SHA-256: 72aae13624be738103ea4438a10961a70dce4566013c3d4d815e14001ded9dfd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically advertising game hacks and generators. The document body and heuristics indicate a lure to click these links, which likely leads to a malicious payload or further phishing attempts. No scripts were extracted, but the PDF structure itself contains malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8010

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-hack-roblox-accounts-2021-game-hack In PDF document text
    • http://gitagasht.com/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://gitagasht.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://gitagasht.com/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://gitagasht.com/images/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://gitagasht.com/images/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000332c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332C 26012 bytes
SHA-256: 0774f82b46732b0ad8e6d4e39ead18da4d96c61c953119028a1f7874e95d5f2d
font_01_sfnt_off00006ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000078a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A9 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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