Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64a7c5de87e423a…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 04:10:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2de2a7e43598e4cb9184ce36f3185379 SHA-1: ab23df5173b4bee70023b41d1ae72c1681789ebb SHA-256: d64a7c5de87e423a8fe5b65c1b24ac47628c2e8f085b35f0ca3dbb002c30908a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The presence of these lures and the ML classification strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/double-jump-roblox-hack-game-hack In PDF document text
    • http://new-era.com.tw/image/data/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/pokemon-go-free-gift-codes_GM1094591345.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/counter-blox-roblox-offensive-hack-download_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox36com-free-robux_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_off00002f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F88 22952 bytes
SHA-256: f7723fe29497dd7e0504aedc49c0a619a626694e49b40bd9d03b27de9c2a038f
font_01_sfnt_off000062f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 19564 bytes
SHA-256: 5ba7a2a26ab9c736807764a471288180825e30b77b78af4a304ea54178c37d0c

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