Malicious PDF — malware analysis report

Static analysis result for SHA-256 841d9a189c423c9d…

MALICIOUS

PDF

42.5 KB Created: 2021-05-20 01:27:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: fd031b433e299c385626b6101ce855af SHA-1: 2b98a865fe4d2687739bca12cabde5e0cf9357a9 SHA-256: 841d9a189c423c9d3a3cf9022c7412a7ad2bb18a22f1eea39fe50808d2b93b01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/how-can-i-get-free-coinsn-coin-master-game-hack', are designed to lead users to potentially harmful websites. The document's content and structure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/how-can-i-get-free-coinsn-coin-master-game-hack In PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/pubg-uc-redeem-code-2021_GM1330123889.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/moon-active-games_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-pokemon-go-accounts-level-35_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-gen_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_003_off00004aeb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEB 25620 bytes
SHA-256: 529179a50804aa09821f17d52dc95ccceee22651c0ac8a7385f034c584706aa6
font_01_sfnt_off000084f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F1 17872 bytes
SHA-256: 7acb2ea7ca48292ff84e38b925b00f57c40a05e644be1ec1a4eb48c7cb3542c1

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