Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a51c9dfaa3cbfe…

MALICIOUS

PDF

46.4 KB Created: 2021-06-07 08:17:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 25853c858fe2d6c7c2820562c3d500f2 SHA-1: 0ec50f5e4f8dc6e36db36bbf4c9e30b99aaf5392 SHA-256: 70a51c9dfaa3cbfe49f237aab94a17ac956fc81de903139c5bbe24bf757ed860
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game items and hacks, directly linking to a known malicious redirector. The document body, though heavily obfuscated, contains references to game hacks and the malicious URL. This indicates a phishing attempt designed to lure users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-get-a-free-group-on-roblox-2021-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spins-on-coin-master-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E3 27104 bytes
SHA-256: fcfac16a9009925cf66b128c7f2a40545fb86e7efe97ff27d3f39e8bf3cde2d1
font_01_sfnt_off000090d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D8 18936 bytes
SHA-256: ff34fc4e3c1f140a66e855869fec1940135e922bab29ac4123ba7baf6e25909f

Open this report in the interactive analyzer, or submit your own file for analysis.