Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ee6af4ed9d7d5c…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 11:39:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2002403eb33a426e0090f18719739c54 SHA-1: 26503edb6024a7b38af73f9dfa9406f15ebeb4af SHA-256: 83ee6af4ed9d7d5c069118cd2ee254dc622d62dadbc46277de35cd4f2e14c886
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs point to a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-earn-robux-on-roblox-game-hack In PDF document text
    • http://initiatiev.nl/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://initiatiev.nl/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://initiatiev.nl/images/coin-master-free-cards-link_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004943.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4943 25292 bytes
SHA-256: 5b52c5b501ce477014edaea9f07c37828ec7d74e8f8b0858ffbfc6f4e3958353
font_01_sfnt_off0000841b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841B 18316 bytes
SHA-256: 648fa2b30230dc2606705c3a90d8924a9412c1d260df5319690c757a03f83928

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