Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabaf58a4a79a625…

MALICIOUS

PDF

36.8 KB Created: 2021-05-22 09:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e967e7b69ef97622347883b2dceecc05 SHA-1: ea341c7114613a9eb587277f232a26236d4f24c7 SHA-256: dabaf58a4a79a625a52be0c5f19a47b8dac25e30b6d3ad9c878b707ecffe15e4
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to what appears to be a game hack generator, which is a common lure for phishing or malware distribution. The document body explicitly instructs the user to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', and the embedded URL 'https://netcdn.xyz/app/479516143/minecraft-free-download-iphone-game-hack' is flagged as a malicious redirector. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document may also attempt to trick users into executing commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/minecraft-free-download-iphone-game-hack In PDF document text
    • https://nyomansuwirta.com/assets/CKImages/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://nyomansuwirta.com/assets/CKImages/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://nyomansuwirta.com/assets/CKImages/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://nyomansuwirta.com/assets/CKImages/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://nyomansuwirta.com/assets/CKImages/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://discord.ggIn 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_002_off000033b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B3 25680 bytes
SHA-256: 10b5cba6ec0b164cd77cdad4cf11256c80f440c5ed6018bd0a4411a7a61bb21f
font_01_sfnt_off00006dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCE 18632 bytes
SHA-256: 69c9e1d53de598faa7eba3c7e7e0e0cf5fcd320a3cd8fa35101ea10459ac0f9f

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