Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed772c14e0dafdb…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 05:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c303cd60e2aac6f21fd2cb605e1d5f7f SHA-1: 3b17a0f79112b9256150bf8d48c929b79c2a5579 SHA-256: 4ed772c14e0dafdbf46b0b7868c332112f7cca363dfa539ad04c274185b70279
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'game hacks' and 'free spins'. The primary URL, https://netcdn.xyz/app/406889139/daily-free-spins-coin-master-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce the lure of free in-game currency or hacks, a common social engineering tactic. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly indicate a malicious intent to redirect users 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/406889139/daily-free-spins-coin-master-game-hack In PDF document text
    • http://www.awakeningtruth.org/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://awakeningtruth.org/images/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/www-robux-us_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/coin-master-mod_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_off00004bfa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFA 25212 bytes
SHA-256: 696618ef10662218eedfed6818a016a72b83efd4fbae798b13b2baf2496afc13
font_01_sfnt_off000084b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B7 18308 bytes
SHA-256: 814bd0a2b88bdef89f3245e401f7fc464bd7314e61fe604409dcfddce4500050

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