Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a25e2c4c2043b50…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 06:01:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 658dc264a3ce6bb9c2c2c53cafe2c99e SHA-1: 2b069878b194c38d76386c832e1e0d735c29462b SHA-256: 3a25e2c4c2043b504e917ef0d0f0c1f8412c2626b01b55ef10eb030cd7a8f9f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and generators. The document body and embedded links strongly suggest a lure to a malicious website, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF's structure and heuristics indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/how-to-really-hack-coin-master-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-spiderman-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/is-minecraft-free-on-computer_GM479516143.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_off0000502b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x502B 24436 bytes
SHA-256: 377537f40529ce5e453c8319ea625426179ada60c380541da013f6cd0f62b5f2
font_01_sfnt_off0000884b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884B 18132 bytes
SHA-256: 43fabb79dcfa9a2667d849210538d71144c24d5b20537b6e3355d373d42557b9

Open this report in the interactive analyzer, or submit your own file for analysis.