Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff70735ed3badcec…

MALICIOUS

PDF

36.1 KB Created: 2021-05-23 21:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f1d08a1fe9087061521108edbe7a3de5 SHA-1: f8934f03098a14e4af9e85400761bf6473326a0b SHA-256: ff70735ed3badcec73316eaf4c1dfc872d27ad52ce6eb0dddd1ea40f23216b68
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically a 'free generator / game hack' lure. The ML classifier also flagged this PDF as malicious. The embedded links likely serve to download further malicious content or redirect the user to a phishing site.

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/406889139/coin-master-free-spins-link-download-game-hack In PDF document text
    • http://www.zdravazena.sk/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/haktuts-coin-master-free-spins-2021_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_002_off000032a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A4 24472 bytes
SHA-256: bd0d4dc777793df605a630860b263ceb763a6fecd94ca917cad57c9b18f91bcb
font_01_sfnt_off00006aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA5 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46

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