Malicious PDF — malware analysis report

Static analysis result for SHA-256 37deef3078b7ec36…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 09:23:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 22e02d686f749884f4de27c589ecdb09 SHA-1: b83650fee87503a416cb31d3d6d40a5b800f645a SHA-256: 37deef3078b7ec36f8e08156000fdc47cfe4327895218259e2350a4fb9ce9c25
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising game hacks and free currency for popular games like Roblox and Coin Master. The primary malicious link directs to 'http://netcdn.co/app/431946152/prison-life-speed-hack-roblox-game-hack', which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a lure for potentially unwanted applications or further malicious content delivery.

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.co/app/431946152/prison-life-speed-hack-roblox-game-hack In PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-free-gameplay-no-download_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/guild-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/spare-reborn-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/rbx-free-robux_GM431946152.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
font_00_sfnt_off0000301a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301A 21904 bytes
SHA-256: 48be6bb3cda78ab470831d8c41e7b99cf1973c7138419b059deffacde2105112
font_01_sfnt_off000060bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 19280 bytes
SHA-256: c088f493267178dc265f6cb04f7306bf1b926edd80c00e8b242fc98380035585

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