Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba902ce8979bbe20…

MALICIOUS

PDF

41.7 KB Created: 2021-05-21 22:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45b1ea67b2320f8efac37bafffde6277 SHA-1: 6d35e40c2549286b37aa2eb6b8d38ef743237d0d SHA-256: ba902ce8979bbe206aae640d380ff5b2acf857bae447c63c4561e56d0c2a9545
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious domains, disguised as a lure for free in-game currency. The ML classifier also flagged this PDF as malicious. The document body explicitly mentions 'free generator / game hack' and includes a call to action to download, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8078

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-easy-no-download-game-hack In PDF document text
    • http://unifieo.br/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000308d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x308D 25616 bytes
SHA-256: fc38b6bf0e7910c6d9ea835774488149622d77ecf4fc858ca2368774bfdd18c3
font_01_sfnt_off00006813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6813 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000071f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F8 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off00007ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 19108 bytes
SHA-256: 7bc61c49a0b734df4d56b9cb8c894117daf111bfa68c773dcc76edca8f070452

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