Malicious PDF — malware analysis report

Static analysis result for SHA-256 a46616d1a40e5086…

MALICIOUS

PDF

35.9 KB Created: 2021-05-24 04:16:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 860d15f233780323769534b2d6dfe691 SHA-1: bc46c1ca885a155e80471d6bdd9c95b9824f3173 SHA-256: a46616d1a40e5086eb15d103ba2a258630cc8210ae3833cc35f9228194cd50e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising 'free Robux' and 'game hacks' to entice users. The document body explicitly contains the phrase 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The embedded URLs are designed to lead users to potentially malicious content or further download stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/431946152/how-you-get-free-robux-game-hack In PDF document text
    • http://dieter-sauter.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://dieter-sauter.com/images/tiktok-free-download-for-iphone_GM835599320.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-roblox-on-mobile_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
font_00_sfnt_off0000323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323B 24516 bytes
SHA-256: 044147dfa84a648cd8ca80f194b94bdb5df8aebd78f6b01173019c454aceebeb
font_01_sfnt_off00006a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 18444 bytes
SHA-256: d3aeb47c5138bb2f7afdc1cd1986e008461219f841fd4d3ae6acb877e9db5a0e

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