Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b007eeb72de03b…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 13:42:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d6c61699dd2f3a5e405b503b45f9acae SHA-1: 0b39a54038a1d358d70774c6d09ad63b05d90b37 SHA-256: e2b007eeb72de03bed41a7624caa00c36858d501de296bb7017ed07198028867
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically targeting users interested in game hacks and cheats. The document body and embedded links suggest a lure to download or access further content from these malicious sites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings strongly indicate a phishing or redirection attack designed to lead users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/406889139/coin-master-hack-cheat-engine-game-hack In PDF document text
    • http://library.acehresearch.org/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-can-u-get-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_004_off00004ff8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF8 23996 bytes
SHA-256: fddd0e0860a3ac156611176d0ba38b88598a57add3ec2ec8698dd94d834c547a
font_01_sfnt_off0000868e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868E 18172 bytes
SHA-256: e3f41997ae9b51af751d949b3a003807251391f9a40890f8515a7dcb8e6b4f46

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