Malicious PDF — malware analysis report

Static analysis result for SHA-256 070f8f7ffa2a5d7b…

MALICIOUS

PDF

43.4 KB Created: 2021-06-09 02:08:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0fcfe11d420cf477258308bd3d68409a SHA-1: 08e50d70923a6fb1eb0eb050989f349e09ee511a SHA-256: 070f8f7ffa2a5d7bd0172248543f7e9066ffe2e38cb1f1ed6d1588aab0ba1b5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector, leading to a "free generator / game hack" lure. The document body and extracted URLs suggest a phishing attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-acounts-on-roblox-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-wallpaper_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/blox-rewards_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/tiktok-free-overlays_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-100-spin_GM406889139.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
font_00_sfnt_off00005075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5075 23964 bytes
SHA-256: 383a29e520380de84c3feb0e6cdd47d9f8dca8dbd4709c2b176e8b9a15ccec40
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 18192 bytes
SHA-256: 14d73d83c4716031381c071f1f0da73d2ca7cd513dc18fc48ec3ac86d0bbfffd

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