Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5162b197f6e65a8…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 15:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a35f433c39cf6602583231f06041d169 SHA-1: acfb69e3c550640419b7ad874d408208ad8d0bb0 SHA-256: e5162b197f6e65a89c1504ea22d072b3440ff164a9ce910ec00d8c8f39441d11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as generators for game hacks and free items. The ML classifier strongly flagged this PDF as malicious. The embedded links likely lead to further malicious content or malware downloads, serving as a lure to entice users into clicking through.

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/coin-master-free-items-game-hack In PDF document text
    • http://d-cision.nl/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/earn-rbx_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-hack-roblox-jailbreak_GM431946152.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_off000049d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D2 24156 bytes
SHA-256: 7550aab6ffe83e1c00975c81805833a542b37fae793c70429d36a8e201a7523d
font_01_sfnt_off0000803b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803B 17968 bytes
SHA-256: 573beccbb9385faa7d237b72ffee946266096df963b3eebf5a3a94db09fd0704

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