Malicious PDF — malware analysis report

Static analysis result for SHA-256 0151519f4462eb75…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 13:29:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f9d63b6d4f68c0764b4cf7b53be19308 SHA-1: aa5a4489607f8a17997c9780e39d47c310495bef SHA-256: 0151519f4462eb7520ac2294eb1719288b633a9a767d8733e2acd21b7005fbba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a 'game hack' redirector. The presence of these links, combined with the ML classifier's high confidence score, indicates a malicious intent to redirect the user to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs suggest it functions as a lure for malicious downloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-spins-coins-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/easy-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/online-coin-master-free-spin-app_GM406889139.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_004_off00005057.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5057 26176 bytes
SHA-256: 7362c7d31d39d6690de84cfa3b6a8fda8b440657c956954ea52dd8715a60f952
font_01_sfnt_off00008bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDC 4020 bytes
SHA-256: 7d3617ecf51e14e6cffc9372c4441988c3b6cb3ea010f7512aee6af842ef388d
font_02_sfnt_off00009967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9967 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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