Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d85c97ea7ff31d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 10:22:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5d67fc5f53a3881d3945e7d8d8647939 SHA-1: 2f4f154262128ee8de167ba003c8b648f60e9ef6 SHA-256: 11d85c97ea7ff31d6085b8c95faaa3236575f5b06a30ce18d3c6a8c1f5942829
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains multiple links to external websites, including a known malicious redirector, that promise game hacks and cheats. The document body and heuristic firings indicate a lure for users to click these links, likely leading to further malware downloads or scams. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-download-2021-game-hack In PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-hack-redline-v3-0-download_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-promo-codes-gen_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-pins-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-script-executor-free_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_002_off00002e65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E65 22896 bytes
SHA-256: 9e983191a0b40ec12c6debbf3529d19fc725e24f178ded359731c4f3a671abea
font_01_sfnt_off000061da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 18988 bytes
SHA-256: 24c61ec5dda380d335f70cf248a1dbd8858f35ecf964e4cb835eae0821bc023c

Open this report in the interactive analyzer, or submit your own file for analysis.