Malicious PDF — malware analysis report

Static analysis result for SHA-256 84910acfb9f82db0…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 02:31:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 383ea7ecc0e286c1d1a0eb0786b481d9 SHA-1: fb890ed4da98237f6856b26f4447260c9d2bb4b8 SHA-256: 84910acfb9f82db086f83037d5e6701f74ef355d0ab4b010660ec9d909f50ce6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and currency generators. The primary lure URL is https://netcdn.xyz/app/479516143/how-to-get-minecraft-coins-for-free-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting potentially harmful sites.

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/479516143/how-to-get-minecraft-coins-for-free-game-hack In PDF document text
    • http://schrichte.de/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/huskybuscom-free-robux_GM431946152.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_003_off00004bbb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BBB 24948 bytes
SHA-256: 42dc723e61aebe4cee1bbaf5a8df9e9c37b4191b420ae04c2b97c38290ff0950
font_01_sfnt_off000083da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DA 17872 bytes
SHA-256: 0037a1fc045e764a0a06593ed58f76bf502c93e6708a03a1db6b693a2071c675

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