Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f1191e24f49026…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 22:10:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 70f8c357d0b299f08165557cec4f44ff SHA-1: 0c219b7fe3e463d58c6b700226c2c564eaada42a SHA-256: c8f1191e24f4902679409812b7dca22fa729236eb347f70384c6469f11cc2325
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a prominent one to 'easy-robux-game-hack', which is flagged as a high-risk lure. The document body, though partially obfuscated, also contains references to game hacks and free currency, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/431946152/easy-robux-game-hack PDF link annotation
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/blox-land-free-robux_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_off00004662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4662 26248 bytes
SHA-256: 0f3003a23de6dae7e90003c9d3ef669645d9b4963d7aea633640184645718618
font_01_sfnt_off00008133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8133 2872 bytes
SHA-256: 5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207
font_02_sfnt_off00008aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEF 18260 bytes
SHA-256: 6f89279168fd50a5f3cec5bfd170c68a2c9d13d585bdac07df4f7428a81fa8a5

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