Malicious PDF — malware analysis report

Static analysis result for SHA-256 987e16d1f69c7f57…

MALICIOUS

PDF

38.1 KB Created: 2021-07-02 07:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 46e0a92bc82f3f08190c989708b71574 SHA-1: a7f053a1b1156aeee0ecbd27f15572a814b86bc2 SHA-256: 987e16d1f69c7f573a948b01994c3478de32cebb19a0e3978a09881df28ec940
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/how-to-earn-free-robux-with-proof-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/free-gift-codes-for-roblox_GM431946152.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack-generaort-hack-accounts_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hacked-places-free-download_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/hack-admin-roblox-nante_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/proxo-roblox-cheat-discord_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-prankster-face-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-roblox-for-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-to-vbucks-translator_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/arcane-adventures-hack-roblox-levels_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-phantom-forces-aimbot-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-free-roblox-robux-on-therobuxapp-com_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/pokemon-go-free-download-play-store_GM1094591345.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B22 22924 bytes
SHA-256: b3f9b9636b799770cc3e98dbdd62f049fa047fdccbd666005c6223498bbb4d03
font_01_sfnt_off00006e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8F 19624 bytes
SHA-256: 5e3f4c69cad9388025418c64ed0a75bd82702555496604bf059d2d0c10822e35

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