Malicious PDF — malware analysis report

Static analysis result for SHA-256 aacb0be513a5a61e…

MALICIOUS

PDF

49.6 KB Created: 2021-06-04 01:54:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9bf5df003ead16482fef083e5019eb9c SHA-1: 239cbdf628ea2489120dd4b1f6d8e5d5fbc53780 SHA-256: aacb0be513a5a61e0bc9a1f497985e67a577febe062f916e76fa1c56f362d86a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded URLs and a document body that attempts to trick the user into downloading a file related to games. The ML classifier also flagged this PDF as malicious. The presence of multiple URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9751

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.online/app/479516143/minecraft-font-free-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005355.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5355 24644 bytes
SHA-256: de77417a827d3bd9c278338f922e73f30f1d1f9fb1686a3b5dc06f72bf7a14ca
font_01_sfnt_off00008ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA8 3372 bytes
SHA-256: cd6dbe03af8eb48c669d5380df8e60ea322c4c614a324cbaa9686124534ac1f0
font_02_sfnt_off000096c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C2 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000a0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D2 17712 bytes
SHA-256: 48684535abb05df1a4efb13fd94135dee175bf6b61229e4eaa41ff3ed13e5a52

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