Malicious PDF — malware analysis report

Static analysis result for SHA-256 14729c17a1aa40c1…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 06:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 38e9007932154c40731f3902deb484af SHA-1: 09a215446da435450863c3955565f847a8b5a9a6 SHA-256: 14729c17a1aa40c1a6b3d5375539948f259309cdddcbbfab9c6021cc2e8b9744
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as a game hack generator. The document body and embedded links suggest a lure for users seeking cheats or in-game currency, leading them to potentially malicious websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/corn-master-game-hack In PDF document text
    • http://eooe.gr/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-coins-for-flip-master-online_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_off00004a1f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1F 25556 bytes
SHA-256: 60c16403dee5c53e67efe92157f520e0f5159c86ba949d478cbd69f4b737d88a
font_01_sfnt_off00008426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8426 17428 bytes
SHA-256: bb7ddfb5eeb119ecc025e94c1b8f2696886702df12a5472958d742496d82a376

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