Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6a99cc5fc1c237…

MALICIOUS

PDF

36.0 KB Created: 2021-05-24 04:01:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 69f68b0513017636b79ffd0053e14890 SHA-1: 42bbc00f564098062203769af204dd97321f8721 SHA-256: eb6a99cc5fc1c237245564d7bd4d87d8b77583d056379867d3f9292a2f52d1fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised with lures related to game hacks and free generators. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest it's designed to redirect users to potentially malicious websites for further exploitation.

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/479516143/minecraft-building-hacks-game-hack In PDF document text
    • http://haertetechnik-steinbach.de/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/hack-coin-master-mod-apk_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
stream_002_off000032ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BA 24596 bytes
SHA-256: 49fe73f3d507e1956c341be425c596af287be42c671f2a05072c2c6fe5747a5f
font_01_sfnt_off00006a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A54 18628 bytes
SHA-256: 03be4b6b10a4c687c6c89c16a3bf013511456428a76c01e3ee63370f4522cf94

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