Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9d81e001c917ab…

MALICIOUS

PDF

52.6 KB Created: 2021-06-09 03:12:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 37a01b2fbd6c9248ed660009ae1d121f SHA-1: c65bcc70e71e63bf03c6de405c147f22fdbf8402 SHA-256: 3e9d81e001c917ab63c41a1c3126b3e9f7a3d237f585e50b750c5f446be0c5cb
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, including one pointing to a 'free generator / game hack' lure. The document body, though heavily obfuscated, also contains references to game hacks and URLs. The presence of many external links suggests a link farm or redirection to malicious content, consistent with social engineering tactics to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/hack-roblox-deathrun-game-hack PDF link annotation
    • http://chem.ipb.ac.id/kim/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-hack-generator-2021-that-i-can-download_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/complete-an-action-for-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-kid-friendly_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000523c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x523C 25796 bytes
SHA-256: 4b9b27320ca4fa595893cd370bbbe2e519815810b00974796a86d5d61e63e1b8
font_01_sfnt_off00008d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6E 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off0000a9d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9D9 18760 bytes
SHA-256: f6ebcfa266a53dac200835d3746f3e22a828e96677aaffa36bceb63ca5d2ee73

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