Malicious PDF — malware analysis report

Static analysis result for SHA-256 72be8b68bc07e139…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 13:51:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 03d391d93adc0a610bacdf16ead2ade6 SHA-1: 4f5a33efc5acdc2bb5c2a1d33a0175d159e91a96 SHA-256: 72be8b68bc07e13960cdddcb79f1fd1b0a6f26263fc739b7c94309ffd35b6ec7
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/1094591345/pokemon-go-free-upgrade-game-hack In PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-iphone-free_GM479516143.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_004_off00004f8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8E 24584 bytes
SHA-256: acc62516a69fa806dd681be1dd3a8b54eb5a203c1a4e661be4036565e29226af
font_01_sfnt_off00008780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8780 18892 bytes
SHA-256: e725201a1d8ef43221d548c4c854cb0476d905e9401956cbf2998d63af262e44