Malicious PDF — malware analysis report

Static analysis result for SHA-256 70abd92890fb1f44…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 08:43:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fee980a547052ec67521aa9f545364c4 SHA-1: d0084a339c0d505d9fe436fccb8fb29c6fb7252a SHA-256: 70abd92890fb1f44552d6227c069d40bad2abc2260bd97f44d1738701397e914
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to external websites, identified as malicious redirectors. The primary lure appears to be related to game hacks and generators, aiming to trick users into clicking through to potentially harmful content. The presence of numerous redirector links and the ML classifier output strongly indicate malicious intent.

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/479516143/clients-minecraft-game-hack In PDF document text
    • http://quatangthienthan.com/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://quatangthienthan.com/images/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://quatangthienthan.com/images/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://quatangthienthan.com/images/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/coin-master-hack-spins-apk-download_GM406889139.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_off00004c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C99 25296 bytes
SHA-256: 3a07e6a889d283c52c495ae10b7366206fcf905670b9409fcb04a8ba379bb342
font_01_sfnt_off000085de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DE 17644 bytes
SHA-256: b1e6b7721ac76cdb58ab715170998ed65443e780ca06fc40eb483816b5c8893a

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