Malicious PDF — malware analysis report

Static analysis result for SHA-256 4119f6843a2225df…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 20:53:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e7c21709559c127ceea6331c63c0195 SHA-1: 5c78af4e042e3a2579e1116bb98bca79f305b5a0 SHA-256: 4119f6843a2225df830a28244afe297858041a055b68e5b99b70d6e540ba6268
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as game hacks for popular titles like Roblox and Coin Master. The primary lure directs users to 'netcdn.co', which is flagged as malicious infrastructure. The document's content and embedded URLs strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

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/menu-hacks-kupkake-roblox-game-hack In PDF document text
    • https://www.studio-dentistico-fiume.com/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/pokemon-go-free-or-james_GM1094591345.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/cheat-engine-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-hack-accoutns-on-roblox-october-2021_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/scripts-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off00002ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED1 22224 bytes
SHA-256: 0d796d89a8e0982d9544463ac47b16e5c2b8e7b541f818dadfc67ffe9569905c
font_01_sfnt_off00005f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F79 19168 bytes
SHA-256: cef67fc607f34fecae3e872dc0dab016bd3c92a5f1f55a17f57411ed8831513f

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