Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d8aedc259adbf9…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 12:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b7d122b48842e940a9ab6cdd3dd81dc4 SHA-1: 61d8d476a69a01cfa2c3146cfb444e828d24323c SHA-256: 09d8aedc259adbf9553aeb93e400f69bf9b91a734a2434295307baa5b6edeccb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' to lure users. The ML classifier strongly flagged this PDF as malicious. The presence of embedded links and the lure content suggest an attempt to trick users into visiting potentially harmful sites, likely as part of a phishing or malware distribution campaign.

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/minecraft-games-free-download-game-hack In PDF document text
    • http://e-mailservis.cz/images/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn PDF document text
    • https://discord.ggIn 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_off00004a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A10 25364 bytes
SHA-256: 287bf0c7ee2a742f06c83e264c8bfd2f0a16e77107b1a76c09dac398b7af8894
font_01_sfnt_off000083ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AD 18548 bytes
SHA-256: ca1316f27781c6024a610b7b161693a7a162d40ad3e3bb281154e4fcfa7f8f80

Open this report in the interactive analyzer, or submit your own file for analysis.