Malicious PDF — malware analysis report

Static analysis result for SHA-256 0401f08ece582ec9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 02:56:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b95b11117d4064d7a4dfc46fb12c28df SHA-1: a26d4e1cde28d3413e24bacc266ca713dfde6184 SHA-256: 0401f08ece582ec93bdffe324b88c6826b1d25451e4a59c645132d08dab7c249
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a site offering 'free generators' and 'game hacks' for popular games, specifically mentioning Roblox and Coin Master. This lure is designed to trick users into clicking the malicious link, likely leading to a further stage of infection or a phishing attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-in-app-purchase-hack-game-hack In PDF document text
    • https://new-era.com.tw/image/data/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-bc-in-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/can-i-have-free-robux-please_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/ifninite-jump-roblox-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-group-admin-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-roblox-website_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
stream_002_off00002fbc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FBC 22920 bytes
SHA-256: cf28b4b8b4dbca8cb50097b9e110478d5bc28d6777a38265e8ee264e82a359e4
font_01_sfnt_off00006310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 19292 bytes
SHA-256: d614f91ad9513bc7e32b2a19c4a7b8f09791b11bc2ab9fea2561bb92f563de1c

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