Malicious PDF — malware analysis report

Static analysis result for SHA-256 9988dc5b2f17d5f0…

MALICIOUS

PDF

47.2 KB Created: 2021-05-15 10:01:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc04d7f22a43654940db6051cf512bfb SHA-1: a9d1dce0e1678619846af6995cdf3887e6b53b2b SHA-256: 9988dc5b2f17d5f00356151fb72d12b39ae333ca100f35a98fbe06474c374c7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/vip-roblox-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/vip-roblox-free-game-hack In PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/body-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/minecraft-cheat-client_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD8 26856 bytes
SHA-256: 5ca9b8df22ecfc4bf9fa8948392d69e6888304ef08b0e4723d2443fc16e81d7c
font_01_sfnt_off00008975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8975 3464 bytes
SHA-256: 8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20
font_02_sfnt_off000095ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95AB 18380 bytes
SHA-256: 36df52832172213c9c2be9107f6005f18732e6546fa2c0231abd2cacfa04afea

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