Malicious PDF — malware analysis report

Static analysis result for SHA-256 fead84a0255127d7…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 00:42:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e77ed830683f16629ef78d65ff5a4e87 SHA-1: a72763aadfb4a418b3086223a9a16c95dda28672 SHA-256: fead84a0255127d7703406b6c196a4262bc7c5df5220057a7035814184f30522
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings confirm these links are associated with malicious redirectors and lure users with promises of free game exploits. While no scripts were directly extracted, the document's structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

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/best-free-roblox-executor-game-hack In PDF document text
    • https://newenglandafs.com/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-coin-master-app_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-devil_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/websites-that-give-you-free-robux_GM431946152.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_off000047ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EC 25948 bytes
SHA-256: 1560098b2c7bed88ebba81617d5d60d053fa4597416445b8f9a2ad68302701e2
font_01_sfnt_off000084ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EF 18192 bytes
SHA-256: 733e9a0a0591b99c013d9411b1913d02d457623b74e1d64140f900850ee20a3c

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