Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bacf462c3e8fbd6…

MALICIOUS

PDF

33.7 KB Created: 2021-07-19 05:22:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c4ca82805559884ca4bfbdac8ab2a0b SHA-1: d137b09826083c623d7a5817aa0328f6609213af SHA-256: 5bacf462c3e8fbd66408d103283042c3a340b2807bf15f1bb9e9a1c89e360f80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a game hack generator. The embedded URLs and the heuristic firings strongly indicate a phishing or scam attempt designed to lure users to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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 http://netcdn.tw/app/406889139/coin-master-hack-without-verification-game-hack In PDF document text
    • https://torkelson.se/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://torkelson.se/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://torkelson.se/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://torkelson.se/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://torkelson.se/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://torkelson.se/images/best-free-minecraft-servers_GM479516143.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_off00002cf0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CF0 23388 bytes
SHA-256: 0a1ae56a3f320c269e58f425794cc6517148052bbd87af7608946a2b8dd41a6b
font_01_sfnt_off000061b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B1 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791