Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e8c26a71b342ec…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 04:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e8af4be7e21e022b9230aad63c326f24 SHA-1: d7fd6dbaf5af71520797de7bc1c9449147d9e10d SHA-256: c1e8c26a71b342ec11d4770c9a994b2f626dc14b4b668305c06f94d0ef8908c7
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.co/app/431946152/how-to-egt-free-items-roblox-email-game-hack PDF link annotation
    • https://key8013805.com.tw/upload/files/roblox-hack-tool-download-no-survey_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/pubg-uc-vn_GM1330123889.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-hack-roblox-and-get-infinite-health-2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/wurst-hacks_GM479516143.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_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22840 bytes
SHA-256: 646a4f593def819d6e9c0827dbd3a7507c4d6a23a6ba247f6f7ee7ce4573cc8d
font_01_sfnt_off00006262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 19300 bytes
SHA-256: 97445ce5eb36eeffed4260026bfaa6a2ef1f41632fea6eba7e00b04780a77265

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