Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc503cf74c2c5f9…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 11:55:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89856ca59465e323e150a3ca63d0b15c SHA-1: ae6108fc31f2326892135cad4d26b0fd518a7dc4 SHA-256: adc503cf74c2c5f9c5d3e002be909bea2fdecdd0c1c5f216caba9107e16e321c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs advertising free game hacks and virtual currency, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the document's content indicate an attempt to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/best-meme-tshirts-on-roblox-free-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/greenville-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/camping-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-in-murder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-in-roblox-gold-venture_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-papers-please-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-robux-on-android-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-guns-r15-script-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-hacked-accounts-for-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-animation-roblox-june_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-roblox-pc-hack_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
font_00_sfnt_off00002f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1F 22156 bytes
SHA-256: 0262d2fbc6138b55ba13a8a74caa63850ad62d7b469a3521733ee6da48b3690e
font_01_sfnt_off0000601d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 19496 bytes
SHA-256: f718aa899280dbd1a87b9ff110b655bf640406851ad555e3f10a567cefa4818e

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