Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4b49643e3dc147…

MALICIOUS

PDF

35.9 KB Created: 2021-07-07 16:13:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 535650a5961cf7a6ff2170289ad35d2a SHA-1: 0952a74091513eb8c71e5365a637434fa135b18b SHA-256: cc4b49643e3dc1474c8b38d8a87cebf5083f7930521dbae833169c217dd9870d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux hack" and includes multiple links pointing to a known malicious redirector. The primary link, http://netcdn.tw/app/431946152/free-robux-hack-no-human-verification-or-survey-game-hack, is identified as a malicious redirector by heuristics. This suggests the document's purpose is to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/431946152/free-robux-hack-no-human-verification-or-survey-game-hack In PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/cheat-files-org-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-shavaco-do-song-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hacking-roblox-citizen_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/best-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coding-script-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hacks-for-roblox-kat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-no-inpect_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-free-blonde-hair_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-hack-roblox-ac-counts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hack-para-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/testing-5-ways-to-get-free-robux-it-worked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-a-free-dominus-hat-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-roblox-birthday_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/assain-2-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/synapse-x-roblox-download-free_GM431946152.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
font_00_sfnt_off000032ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32ED 22732 bytes
SHA-256: 0c9caa141c963c27d05dae5d66c717667df748c5754e77dbb8092a11c091f689
font_01_sfnt_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 19796 bytes
SHA-256: ad19e1b0895485c37a49fe02fea69dabec772aaf5d58694ea1046abdc2ebb73d

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