Malicious PDF — malware analysis report

Static analysis result for SHA-256 586918dae4d6a371…

MALICIOUS

PDF

44.4 KB Created: 2021-05-16 19:31:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 553f101ea038b5dc066ebdb76b958736 SHA-1: 113f7aa6ddf76582b7f37a477c3a2606fc6bd4a8 SHA-256: 586918dae4d6a3715a0ab5edfbdd00f384fa16663919595bfc7dc2be1af07c3d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/free-spin-in-coin-master-game-hack In PDF document text
    • http://greenpasturesfarm.com.au/images/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/get-free-robux-gg_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
stream_003_off0000495b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495B 24764 bytes
SHA-256: fb296408e44b873b9066642d936e971c2be49a760e655ac8b7d260e6d3ad7906
font_01_sfnt_off00008296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8296 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C47 17884 bytes
SHA-256: d73da77b5a1bbc7a2b5b207bcae6a8efd78ccb1f3c8a04009520d94079973ddb

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