Malicious PDF — malware analysis report

Static analysis result for SHA-256 49fa4a16b64ed593…

MALICIOUS

PDF

49.9 KB Created: 2021-06-11 09:15:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e936d838ce849254e21d946d869b0607 SHA-1: 79d681bc8eaeea995b1fa54e1f7056569b9b7dad SHA-256: 49fa4a16b64ed59370c2a1deb481314db6abdac66f1f393e106c9a9592febe84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links designed to lure users into clicking on "free generator / game hack" content, which redirects to known malicious infrastructure. The document body and embedded links suggest a phishing attempt disguised as a free game resource generator. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-get-free-robux-no-human-verification-or-download-game-hack In PDF document text
    • http://force-seniorklub.dk/images/cb-ro-hack-roblox_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/robux-online_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-free-spins-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000509b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509B 26984 bytes
SHA-256: c4749ce48cd5b4e2d73378ca0277c216ec7b1536448ded69395f0932c4888888
font_01_sfnt_off00008fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD5 19440 bytes
SHA-256: 69823b6fe82032abb68667ae25a2fa504765bee8a8e4ecf1b4204da99a1ba79c

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