Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee4703e171583b5…

MALICIOUS

PDF

44.5 KB Created: 2021-05-16 13:52:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99249843b53fabba2e280d56ed2fe0b4 SHA-1: 8e4604e2cbdc673a04fbb69df67ff061698e1b6f SHA-256: fee4703e171583b5795bb8bfb7300733bbb0c483c3671d53947b9f23dda50d5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body and embedded URLs suggest a lure to download a file, likely a second-stage payload. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points towards a phishing or social engineering 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 https://netcdn.xyz/app/406889139/free-diamonds-coin-master-game-hack In PDF document text
    • https://gryps.de/images/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-gifts-coin-master_GM406889139.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_003_off0000495c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495C 29364 bytes
SHA-256: 783d6daaeea2b70a66075cc3ecb38b87013ef52fd3184da585c59b188e8ca1b6
font_01_sfnt_off00008bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCD 18312 bytes
SHA-256: 023a9ba599e82108ef095f60474bccbb9207093afb07317a246e7535a81f1180

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