Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12acfbbf6ae1e00…

MALICIOUS

PDF

35.9 KB Created: 2021-05-22 03:14:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea101ffcbfecab0d74a01d12cccbd8c1 SHA-1: b5957d48939c8f72448c67f1e3cbcc686387159f SHA-256: c12acfbbf6ae1e000a93bb2b9cbbc070a7ef69b5f9542af98927c3ade5f4555b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure for a 'free generator' or 'game hack', suggesting the intent is to trick the user into downloading a malicious payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/479516143/free-minecraft-survival-server-game-hack In PDF document text
    • https://ceranique.nl/images/claim-roblox_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/master-coins-free_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/codes-to-get-free-robux_GM431946152.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_off000032f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F6 25256 bytes
SHA-256: 2211fb42d61b6247e3dabac44a6c9eadcb5f95a26d6627416c2e3accf746a99f
font_01_sfnt_off00006c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C64 17896 bytes
SHA-256: a416ee995e2fcdad104e8f08570a8c057a7877f0093c65a8eab662d227b30cb8

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