Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02c7b14b551fc04…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 18:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5ba90d609a959e57f4c4b532b38dcd10 SHA-1: b484a6037d71bea1e177b55dd27db786d3594abf SHA-256: a02c7b14b551fc04e1a8c3cf53672f53d3292b1ddd8f2ca4e0594f759ae91017
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure for free in-game currency or cheats, which is a common social engineering tactic. No scripts were extracted, but the presence of malicious redirectors and the lure strongly suggest a phishing or scam attempt.

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/roblox-imagine-game-hack In PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-free-1-million-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/pokemon-go-free-year_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/esp-hack-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/80-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-roblox-gift-card-codes-2021-september_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/get-free-money-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-free-robux-on-pc-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/unjailbreak-hack-roblox-descargar_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-fly-in-roblox-free_GM431946152.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_off000030da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DA 22792 bytes
SHA-256: a1d3786205755164df1dc8d04a0d073865ee026a62ae85905d7f6ef0816a58aa
font_01_sfnt_off0000640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 18864 bytes
SHA-256: ea4d1e0d66ed511fdb3ea7ada25a2e13094c253047fc11979a144078ebcd1e51

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