Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b6c2760f573170…

MALICIOUS

PDF

35.0 KB Created: 2021-06-22 08:04:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d813538f0f2f9447d00445b7ba52d326 SHA-1: 5949f1a1431580795d46737e715823f7a83440af SHA-256: a9b6c2760f57317015f5d088c989b57244154d8b90ac9804f3d5b2c68a50a44b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as generators for game hacks and free currency. The document body and extracted URLs strongly suggest a lure for users interested in obtaining in-game advantages, leading them to potentially malicious content. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing or malware distribution attempt.

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/how-to-hack-a-roblox-account-with-forgot-password-game-hack In PDF document text
    • http://magnipsor.su/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/rxgate-cf-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-play-on-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-your-roblox-account-to-get-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-free-shirts-and-pants-2021_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-item-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/difeml-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/2021-robux-proof-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDD 22492 bytes
SHA-256: bc240c0adf583c1e1c852d4d1e2e776d932e84986f46704ffafb37b7e3efcb09
font_01_sfnt_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 20040 bytes
SHA-256: 613c0f2281e6129e92d3f2e607be9b9549ad3f899c3042b05fde48c020654481

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