Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff15cbccecd45cfa…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 08:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3cbc063d9e5c20335a60d4b246c2a2a SHA-1: 16b2dca501e8d8adae7845486d6aa3d3047f4973 SHA-256: ff15cbccecd45cfaf5781e037460da6d6e405936d6292377e2163ad5ce4f5bd8
160 Risk Score

Malware Insights

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

The PDF document contains numerous links and a visual download button, all related to game cheats and hacks, strongly suggesting a lure to download malicious content. The ML classifier also flagged this PDF with high confidence. The primary IOC is the external URI pointing to a potential payload download.

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/how-to-speed-hack-on-roblox-no-cheat-engine-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-phantom-forces-hack-lua-downloa_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/fond-dcran-gamer-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-speed-race-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-verification-2021-pc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-unlofk-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-menu-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/default-fortnite-roblox-tshirt-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-shirts-images_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_off00003167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3167 21448 bytes
SHA-256: ea763d8033e3de98e233b6abd7a722ce2fc84097b185d25065c21bc1725136c1
font_01_sfnt_off00006076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 19560 bytes
SHA-256: a0e68d2a322f85a38e95c02707db2441c820424aeea509d99b30482f96018a59

Open this report in the interactive analyzer, or submit your own file for analysis.