Malicious PDF — malware analysis report

Static analysis result for SHA-256 4acde26cb02f5670…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 19:27:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1da134fc2ed011cc64896f17c41ac476 SHA-1: c0068fee02bf918f4b700c5bee3a09fdd9483864 SHA-256: 4acde26cb02f5670b999845c2a06327fa5e44deea40c4b7e348061ff19b081b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary link identified as a malicious redirector. The document body text and heuristics indicate a lure for free game hacks or generators, designed to trick users into clicking the malicious link. This likely leads to the download of a second-stage payload or further redirection to phishing or malware sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/can-you-make-a-minecraft-server-for-free-game-hack In PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/rbx-gg-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_off00002eee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EEE 22616 bytes
SHA-256: b441ee52ff137fffd53daf94e7c06b3db6a511439b4c45d4ddd6cf2d7b0cc902
font_01_sfnt_off00006132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6132 18296 bytes
SHA-256: 7b2a5025a6b2eafbb08597cb19c0e2dd24287b9ce61b32a45f1f6eb7f3859dea

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