Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3e95525e09dc51…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 13:17:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 428f433f7a3dfa1777e331673324f33a SHA-1: bcf440de533b9a59c5d22d2d61954a45d669249c SHA-256: 2a3e95525e09dc518cd923e301df89dbfd68d473f559adc8ee879d62c6e24bc0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external sites, masquerading as game hacks or generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' indicate a high likelihood of leading users to malicious infrastructure. Although no scripts were explicitly extracted, the document's structure and embedded URLs suggest it is designed to trick users into downloading further malicious content or visiting compromised sites.

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.tw/app/431946152/pants-free-roblox-pastebin-game-hack In PDF document text
    • https://new-era.com.tw/image/data/files/get-more-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-no-human-verification-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-guess-the-emoji-cheats_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/pokemon-go-free-youtube_GM1094591345.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-any-roblox-game-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-fashion-famous-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-hacks-download-mac_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/robux-hack-gratis_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
font_00_sfnt_off00003090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3090 23044 bytes
SHA-256: 1526397d2ee281cc390d503b9205b7ecd58f2628d14ba3321a297b97dc8e7791
font_01_sfnt_off00006494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 18844 bytes
SHA-256: cfc5af4961f0aebc2f29c473a8a8c863399e0fdd1954fd14470779db87086740

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