Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2fcf50d0f2e0bf1…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 20:05:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0771cb271cf864d172705a35630a703c SHA-1: 2226bf3d4fc82796f1a0ed04b5b405bf3361886d SHA-256: b2fcf50d0f2e0bf1d58a7352b8a6b9a74936619ab05d068a39c5ad2edc638290
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, masquerading as a "free generator / game hack" to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at http://netcdn.co/app/479516143/get-minecraft-windows-10-free-game-hack, which is flagged as malicious. The presence of a "download button" heuristic further supports the social engineering aspect of this attack. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or malware distribution attempt.

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/479516143/get-minecraft-windows-10-free-game-hack In PDF document text
    • https://adirp.id/upload_data/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-para-texting-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-hack-account-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/jailbreak-roblox-hack-money-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-hacking-weird_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/tiktok-free-crunchyroll_GM835599320.pdfIn PDF document text
    • https://adirp.id/upload_data/files/tiktok-free-food-vending-machine_GM835599320.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/buy-robux-free-no-human-verification_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-speed-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-hack-someones-account-on-roblox-2021-jax_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-hair-in-roblox_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_off00003061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3061 22236 bytes
SHA-256: c22d574344686d9bf8c6349bd45e0a9d68daf7e1273d7b3367793fbe0a55f3f9
font_01_sfnt_off000061d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 18812 bytes
SHA-256: 611e0fe8ef0e09460557208b470d6bb305c401f6b817a80b09e66ff1eb668ddb

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