Malicious PDF — malware analysis report

Static analysis result for SHA-256 372d4275a59e733c…

MALICIOUS

PDF

48.9 KB Created: 2021-05-13 10:47:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5ac899f876b51519330711fe433d6a8a SHA-1: 95d59f08fa025552629051af114e77ea17a91fa5 SHA-256: 372d4275a59e733c7a0dc23da3b55da14ba8a19b399128f5c03857a63e59045c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hacks and free currency generators, designed to lure users to malicious websites. One prominent link directs to 'netcdn.xyz', which is flagged as a malicious redirector. The document body and embedded URLs suggest a phishing or scam attempt, likely to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/431946152/youtube-how-to-get-free-robux-game-hack In PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cf1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF1 29140 bytes
SHA-256: 75d3685abd3be11c8c324d99cda0fff1bd859ca9d9e2f791850d25f001991c9d
font_01_sfnt_off00008f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F52 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00009c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C79 18444 bytes
SHA-256: 19af2615bd9086bd478ca88a6ce690b9ca3ed86297e9e30c9ccbcb4910b84991

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