Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1b9a13d9414d8e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 11:12:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a77dd73e66ae80169628f5fd5b480ef8 SHA-1: ac8327dc20348de8fefafb77c097a0b4a4604635 SHA-256: 4e1b9a13d9414d8e3b03f1437c9da0b9454353254f2eafb2b9626baa29d42dd0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and domains, disguised as "free generators" or "game hacks". The ML classifier also flagged this PDF as malicious with high confidence. The embedded links likely lead to further malicious content or phishing pages, serving as a lure to entice users into clicking them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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/479516143/minecraft-life-hacks-game-hack In PDF document text
    • http://aljazeera-me.com/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://aljazeera-me.com/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://aljazeera-me.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://aljazeera-me.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004199.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4199 25048 bytes
SHA-256: 3cd38eed1e9794532dcc7aab0894f20eaf159cf3b6e87698e98ba49dd5d86d04
font_01_sfnt_off00007b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1E 3168 bytes
SHA-256: cfb025f65353ab9f0937a85d57df0ff12d7fa0c6db5944bafd40640b4e5ce199
font_02_sfnt_off00008589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8589 17740 bytes
SHA-256: a9f228f82f523f82f2ec29969fa693daed0cd9273bc8dad9e6ca4184f04ba0fe

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