Malicious PDF — malware analysis report

Static analysis result for SHA-256 be86142073800fee…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 20:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2e0e15722e443eceddecb769e7e08331 SHA-1: 36a42d61de2da53f77028fee408789185c575ba6 SHA-256: be86142073800feef317d31a745e16790bc82805a90ebb72a2a21644d1d7e246
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, aiming to trick users into downloading malicious files or visiting phishing sites. The document body and embedded URLs suggest a lure related to game cheats and generators, aligning with common social engineering tactics. While no scripts were explicitly extracted, the presence of malicious links and the 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicate an attempt to execute commands or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/synapse-roblox-free-download-game-hack In PDF document text
    • http://dialine.cz/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://dialine.cz/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/coin-master-free-spins-bit-ly_GM406889139.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_off0000492e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492E 28508 bytes
SHA-256: add2616d77869934329aeb2b504263645e5d0eef181b3cabbc69862f8ab2e3c1
font_01_sfnt_off000088ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88ED 19036 bytes
SHA-256: 893248d405b3cd6ab4cc16169dbaa725a15df4f046ef9721aa1aaf04f233e0f3

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