Malicious PDF — malware analysis report

Static analysis result for SHA-256 4135e76d3d52bfb1…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 13:18:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a15955d0acc396b8c6eb15c35ff0efac SHA-1: 6beb43fdfd1952f4231e1b563c883f3cbb2c3bcd SHA-256: 4135e76d3d52bfb107dbfacf5ca42bb2183e4a9f8e7352031e48826941da33c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and potentially malicious content, disguised as free game hacks or generators. The document body and embedded links suggest a lure to trick users into visiting compromised websites, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/479516143/free-minecraft-hosting-24-7-game-hack In PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-roblox-for-robux-via-console_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • https://code.giftcards.comIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005333.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5333 25192 bytes
SHA-256: e761b045a6fb67b5a1a628b2591b2991282e9bac85a57b7a29e08bef043f43fc
font_01_sfnt_off00008c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4B 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off000095ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95EC 18240 bytes
SHA-256: a1d0dda2a20c23c2f6b5d38f821eb00881ee16adc5cb924d70fa236c90a36e37

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