Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f1991e353e379c…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 05:51:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: de23c9fc054dff39940d71e2b97c51e4 SHA-1: d3d54b5c9910378d4f601ece89a1e127730dce44 SHA-256: c6f1991e353e379c11e5fc14f75993f712d829c9df7c901e89b549e962243ebd
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 0.9865

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/how-to-get-denisdaily-shirt-in-roblox-for-free-game-hack PDF link annotation
    • https://new-era.com.tw/image/data/files/pokemon-go-free-account-generator_GM1094591345.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/pokemon-go-free-items-code_GM1094591345.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/pubg-mobile-uc-qatar_GM1330123889.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/pubg-uc-at-cheap-price_GM1330123889.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/treasure-hunt-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-daily-free-spin-and-coin_GM406889139.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
stream_004_off00005044.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5044 25324 bytes
SHA-256: adceb9badf85ee4e8aa3dec50889aae591c6a385e7a26f569146aa48fec1129c
font_01_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 19252 bytes
SHA-256: b4cd8643be4aefd9dcfd92a3be8eb9167ec3a042b4346ef4e350b633ccde92bc

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