Malicious PDF — malware analysis report

Static analysis result for SHA-256 452e43c3a7bed329…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 14:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b74a8e676a6dd1c208754bc3be06bb71 SHA-1: 49d9fd46ae7dcc7727df4ca11ed09f3c08dd9aa0 SHA-256: 452e43c3a7bed329c0311c0ed61e0b5ce2c61d613030bd7652e18a63dc6610cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering free in-game items and hacks, with a primary link identified as a malicious redirector. The document body explicitly mentions 'Get Free Spins On Coin Master No Human Verification' and includes the malicious URL, indicating a social engineering lure to drive traffic to potentially harmful sites. No scripts were extracted, but the presence of embedded URLs and the lure suggest a phishing or scam 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.tw/app/406889139/get-free-spins-on-coin-master-no-human-verification-game-hack In PDF document text
    • http://digilib.unbari.ac.id/repository/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/aimbow-hack-fr-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-printable-roblox-banner_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-hacks-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-expensive-roblox-items-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/great-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hown-to-get-ninja-package-for-free-2021-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/the-cheats-mac-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-roblox-money_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-generator-no-human-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-free-robux-and-free-catalog_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/lego-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-spot-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-download-roblox-walk-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000314f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314F 22888 bytes
SHA-256: 292cb44f0212f61acebf47a14eb78d1fccc330ba3c23b13f317042f1e6b68040
font_01_sfnt_off000064ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AB 18708 bytes
SHA-256: d0dce49a89f67e2e1b79927ae0403f7420bc12881175ddef9841a59637cbe668

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