Malicious PDF — malware analysis report

Static analysis result for SHA-256 da281d3487279a2c…

MALICIOUS

PDF

46.9 KB Created: 2021-06-04 04:15:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8bac8e4a4de061ab9045c49bc0b1c6f0 SHA-1: 6b54bb4c4ec44deee08a0df1e902d601c4dd509d SHA-256: da281d3487279a2c6c975dd651aa7bb1c8e90ba2f20d63d5c299413101d68671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically targeting users with lures related to game hacks and free items. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' indicate that these links likely lead to further malicious content or phishing sites. Although no scripts were explicitly extracted, the nature of the embedded links suggests an intent to redirect users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/free-spins-and-coins-for-coin-master-game-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/pokemon-go-free-offers_GM1094591345.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-32-mod-hack-apk-download_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E24 24732 bytes
SHA-256: ac12ba9d9ecf720ba8b6244c5dcb8d3fcc7bfac0a8a7ea5ccf9cb379d472d369
font_01_sfnt_off000086e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E0 4020 bytes
SHA-256: 7d3617ecf51e14e6cffc9372c4441988c3b6cb3ea010f7512aee6af842ef388d
font_02_sfnt_off0000946b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x946B 18320 bytes
SHA-256: d1cf6b486e789d6a7a281824944966070be141b92be060b449a52bae7023ebff

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