Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f5795d0a6e9085…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 06:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33ded3c642bb83fb3156792b570eae1a SHA-1: 28ad03f632a263a22d8de96272b6a2528140166b SHA-256: 33f5795d0a6e9085841d22633b1e920bfbde1f929030fb5f71b46484b7184d27
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, with a primary critical finding indicating a redirect to known malicious infrastructure. The document body and extracted URLs suggest a lure related to game hacks and free generators, aiming to trick users into visiting the malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

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.tw/app/406889139/coinmasterfreespinlink-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-website-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-500k-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/i-want-to-break-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-kick-hack-fe_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-make-a-group-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/call-of-robloxia-5-roblox-at-war-cheats_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-roblox-ccv3_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/dll-hack-roblox-lumber-tycoon_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-a-tiger-free-shard-seekers-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-royal-high-free-diamonds_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-no-countdown_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ef6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EF6 22580 bytes
SHA-256: c75c4d1dc16c6fdb151d9629c425a23282f1cc096edb4006e8a99d5854461eee
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 18516 bytes
SHA-256: a000f6d0810836f211bd69ad4954bd13017d955b6cad91c28efc413f8e97b1ec

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