Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bcc48d6be78cd40…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 14:10:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a65c459e263a9fe3ff98b389668c8129 SHA-1: 97112bc2b6b1cb4252f4db0ca158a968b0fa9ca4 SHA-256: 1bcc48d6be78cd4049821373d05d52b2fc241fd4580ecd6b918fd4bc71c0205a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary malicious URL identified is http://netcdn.co/app/431946152/free-roblox-groups-no-owner-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely initiated via a spearphishing attachment.

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/431946152/free-roblox-groups-no-owner-game-hack In PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-hack-roblox-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-dungeon-quest-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-may-2021-no-suscribe_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/hacking-system-o-n-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-card-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-follow-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/haw-to-get-robux-in-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-accounts-2021-with-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-hack-to-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-hack-peoples-passwords-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000030b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B9 22968 bytes
SHA-256: 8fccedeea569685de0e662afb4b0c23912cf2e5b96f4b932ade57e62761425f5
font_01_sfnt_off00006494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 19128 bytes
SHA-256: 3f59a9ad1bbb4a5c9fd67e71cd94af3f7727d944e4c94637afc6b4d352844068

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