Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed51eefc97437efe…

MALICIOUS

PDF

43.7 KB Created: 2021-06-02 21:29:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 965ca48a792dd067d2bd15c9c8a33e13 SHA-1: f64936c302a9026db79d8ab31e42abb145be440b SHA-256: ed51eefc97437efe9ab9a090c18414dbe3e7ca9c7fc7d977598474047735b4d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body and embedded URLs suggest a theme of free in-game items or currency, a common phishing tactic. The presence of these links indicates the document's primary purpose is to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-wings-roblox-accessories-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/claim-free-robux-button_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_004_off00004d7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D7C 25644 bytes
SHA-256: dbf3b03e447fd35644fd5cd7e6f27ffc259a2838cde3edcfe63a41fb90f89e2e
font_01_sfnt_off00008751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 18556 bytes
SHA-256: c01963e78e8a2d0fb8d427923736ddfa9ae38368cff1106e355f0c148bc5dff5

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