Malicious PDF — malware analysis report

Static analysis result for SHA-256 e960232f74bdc0e1…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 03:56:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bc93a6a74057d57054d486ee9940f658 SHA-1: 3ca40fc4acc2415dfa3f5512dacdd49169217f8b SHA-256: e960232f74bdc0e1f8a6980c3a6fde513816b7d70bda56e3ac7715b0f14a67a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/479516143/free-minecraft-skins-pe-game-hack. This lure, combined with the ML classifier flagging the PDF as malicious, strongly suggests a phishing or malware distribution attempt. The document body also contains this URL, reinforcing its role as the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 http://netcdn.tw/app/479516143/free-minecraft-skins-pe-game-hack PDF link annotation
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-wahoo_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-hack-through-walls-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-hakc_GM431946152.pdfIn PDF document text
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-blood-and-iron-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-how-to-hack-badges_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/2021-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/dansploit-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-links_GM406889139.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_off0000352a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x352A 23052 bytes
SHA-256: 64bb34427c7ebd58d2869f11cec19176ef8047659750f379a5a08e184f482a9f
font_01_sfnt_off00006862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6862 18180 bytes
SHA-256: 03bbaca276f4ce07c12aa831bba89cfcc4ebeeef430a8e21d06434038c5cc938

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