Malicious PDF — malware analysis report

Static analysis result for SHA-256 b454df8d972c2325…

MALICIOUS

PDF

41.5 KB Created: 2021-05-19 04:55:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 72401a96c38414bae291b1bfdd50281f SHA-1: 54fdf4bb347f807e0b1a5e84f6226d4fce2af117 SHA-256: b454df8d972c23257731bebccb22b3eb8c06a08fc90e3e158d1f62feb7d7b4cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-spin-link-2021-game-hack, which is flagged as a malicious redirector. The document body, though partially corrupted, contains similar URLs and text suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-spin-link-2021-game-hack In PDF document text
    • http://italymania.ru/images/wurst_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-hack-apk-facebook-login_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B5 24608 bytes
SHA-256: c32d93681a7ac44947b3a44cff7fe198ca7bec4889dc3f607e55f00b35c00d34
font_01_sfnt_off00007f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F70 18296 bytes
SHA-256: 4d418bd0c3b206d46989616f0b8a308c7c696a7f242422ad22f1dcb8034b6313

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