Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d623a78e1d8327…

MALICIOUS

PDF

46.9 KB Created: 2021-06-08 12:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 79c5df68773f32c3e376c6f4e2d290c0 SHA-1: 7bea7eb3cb9ab40ced61d8ce1207ec07d06ccaad SHA-256: 69d623a78e1d832794cdb1c237a2d4bba84ca335a1c3a7f5441ac7e8f9591921
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 0.9832

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.tw/app/431946152/aimbot-hacks-for-roblox-code-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/pokemon-go-free-6th-gen_GM1094591345.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-rules_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/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-robux-genorator-2021-no-suvery_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-gang_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-hack_GM431946152.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
stream_004_off000050a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A1 27144 bytes
SHA-256: a2806e4a0c76ab3964e105a3f76f2c15be1f544a935d141d2f4211c5189f472c
font_01_sfnt_off00008f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7A 20084 bytes
SHA-256: cf76237f7fe03f69edbac45236e8488534c941232ffb5dc0b27b03a0569ace0c

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