Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32e01809cf709e0…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 19:02:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b27a5525bd65b96744abf36786164e7b SHA-1: 57a7d8b5c88b209e8972bd16bbf02d8eddef3bf1 SHA-256: d32e01809cf709e0318a4dabb4679fac14f9c56d92a77639c761c23674fe93bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and generators for titles like Coin Master and Roblox. The embedded URL https://netcdn.online/app/406889139/coin-master-online-game-hack is a primary indicator of this malicious redirection. The document body, though heavily obfuscated, contains references to these lures and the authoring application 'wkhtmltopdf', suggesting it was programmatically generated to host these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

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.online/app/406889139/coin-master-online-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/fbchampion_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-2021-no-human-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6D 25088 bytes
SHA-256: 2359fb38cc43e86072ef37b73504ce5264ad85c2d0a557ab6e0879eb3ce9decd
font_01_sfnt_off00008672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8672 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9025 17620 bytes
SHA-256: 869d7695d274e208c7f4dfde8f160970e62420a8a3a2b9cf02de0f643df516c0

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