Malicious PDF — malware analysis report

Static analysis result for SHA-256 2021e2be630dc7a1…

MALICIOUS

PDF

45.3 KB Created: 2021-05-10 20:38:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: edb1e86f95580787c1f23724d5a44710 SHA-1: c8f3aa701338c73968eec75063ad5f72d56e41c3 SHA-256: 2021e2be630dc7a1ff47f363b66d581e4e3a21d674b7e5220c790865f514383d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free spins" and "game hacks". The primary lure URL is https://netcdn.xyz/app/406889139/free-spins-coin-master-2021-app-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely intended to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/free-spins-coin-master-2021-app-game-hack In PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/free-coin_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poltekkesjakarta3.ac.id/repository/how-to-hack-coin-master_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_003_off00004c62.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C62 24960 bytes
SHA-256: a9fb7d3f540a8893e99bf4f63438298badbbdb863a5f0f3fb75dd3295ea43666
font_01_sfnt_off0000849b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4D 18288 bytes
SHA-256: 6b6cd7167012eeb1812e943ff49937c2219a320edcaba7462c006fdd54a5786c

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