Malicious PDF — malware analysis report

Static analysis result for SHA-256 3394d5ae9069d63f…

MALICIOUS

PDF

42.8 KB Created: 2021-06-04 00:02:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 65c5d9b150b8693f9fa9cfc626f3ab3a SHA-1: 09725c3af7d9ac127633443246e2f8271f761d46 SHA-256: 3394d5ae9069d63f48dccfb089cb45e42eb1fdb50830ea9c46811edbd510ca15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks or free spin generators. The primary link, https://netcdn.online/app/406889139/get-more-free-spins-on-coin-master-game-hack, is presented as a call-to-action within the document body. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector designed to lead users to potentially harmful content or further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/get-more-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/comment-hacker-roblox-pc_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-no-survey-2021_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_004_off00004fd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD7 23980 bytes
SHA-256: d4685268bb0218ae2fb35a1aa05c22087f74e8c909d0bd8412215a9edc63b805
font_01_sfnt_off000085a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A8 17884 bytes
SHA-256: bb9e4fd9c75f82cb5aaa6c3ce0f9987e8b81c815dbd48b4f27d4577a82c32b67

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