Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe5cb44cab6a18e…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 02:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a8eccc2d3aed90411d4717d7b5909c9 SHA-1: 012b9a70a8d303a828bfd80f2bc179ab6924eca4 SHA-256: 8fe5cb44cab6a18ec4ce447927d3acc0b78b664c660288068ac3b75590dfe25f
82 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 0.9980

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/431946152/free-robux-generator-2021-no-survey-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-draw-2-hak_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/conquerors-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-dont-earn_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/hack-roblox-fly_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-prison-life-v202-gui-hack_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-booga-booga-mojo-hack-wearedevs_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3136 22384 bytes
SHA-256: fad23cefae5560532a4556fad562afbec73a22f649f9d75ec771c569f70dbdd6
font_01_sfnt_off0000632e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632E 19516 bytes
SHA-256: 215bbe1509df05bb6592a2eb23184ac9fd1abeffda7f861746e5b701ad597e03

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