Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a9f4c246aed0ce…

MALICIOUS

PDF

41.6 KB Created: 2021-05-20 14:12:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 79f73fbc7302020d99dbe2429d28bb35 SHA-1: 2214dfbd57514129903f5eccaa85d27568519006 SHA-256: 92a9f4c246aed0ce5986b3c89d39d20f3c093de6880e79fdcab3262c95e0524c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with one prominent URL pointing to a 'how-to-play-roblox-for-free-game-hack' page. The document body also includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious, increasing confidence in its suspicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7589

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-play-roblox-for-free-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CA 29044 bytes
SHA-256: a816cef5853c78b3f7410a16c8763d220ac218e4872071157d31fc43c1e194d9
font_01_sfnt_off00007623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000800d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800D 18672 bytes
SHA-256: 906c5ab25954671913832602069445bf8e1bc7f4afd01cfc240b491243eecc42

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