Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4232bcd1820080…

MALICIOUS

PDF

46.2 KB Created: 2021-05-16 14:38:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 26fd080cd482eed93797bf2bc255c04e SHA-1: 718d95e125caaac716be236eb4e44656f9a26c69 SHA-256: de4232bcd182008059181778ee34e08976100e51d1304796236650c488292627
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, including one that appears to be a lure for free game currency or hacks. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or phishing pages.

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 https://netcdn.xyz/app/431946152/freerubux-game-hack In PDF document text
    • http://make-up-stettler.ch/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A78 31476 bytes
SHA-256: d44599a7a03071e32954f959bb23cb3e2329a9795dfc82349bbc33da06c05104
font_01_sfnt_off000093bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BF 17872 bytes
SHA-256: f4416bbc5f287efcbe31c7b4c704cc92a0ced0ddcdd2f5cfb5fb7d41fdf7fc1a

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