Malicious PDF — malware analysis report

Static analysis result for SHA-256 8502062c0b55c14f…

MALICIOUS

PDF

49.1 KB Created: 2021-06-09 14:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b2fec3e2051e8c45a04a13e4be6428e2 SHA-1: 082fbc85cbce34967f36e30422c34369f61660b8 SHA-256: 8502062c0b55c14f36943fa51b4d624d73f6ec87dbce05e2505f036d3669996e
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 0.9796

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/free-roblox-mod-menus-game-hack PDF link annotation
    • http://deyuan-pc.com.tw/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/descargar-hack-para-roblox_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-roblox-exploits-that-are-safe-vermillion_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/tiktok-free-quality_GM835599320.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-spins_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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
stream_004_off00004f78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F78 28728 bytes
SHA-256: ba8cd1925414a1085db80e9d6934cb3386f5eee241ced20b81885f0a89af855d
font_01_sfnt_off00008fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC9 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDA 18460 bytes
SHA-256: f873c9effb2eaacdfdffac1380cf58b5b1e5a09126d19e56c18a3e12646a20b8

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