Malicious PDF — malware analysis report

Static analysis result for SHA-256 94178943f54d9907…

MALICIOUS

PDF

37.5 KB Created: 2021-05-20 13:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 96e01b3debaa2c6130c8b31c08f5530d SHA-1: 047fe0a765acd49590d92254715c190254648fbb SHA-256: 94178943f54d99075cc7dc911448e5d1a7cbed3e7dc4beea19e10fd156ca0ba4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering "free generators" or "hacks" for popular games, masquerading as download buttons. One primary URL, https://netcdn.xyz/app/431946152/free-roblox-avatar-ideas-game-hack, is flagged as a malicious redirector. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/free-roblox-avatar-ideas-game-hack In PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/free-coin-master-spin-generator_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_off0000314d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314D 28452 bytes
SHA-256: 54ead975f49b65538c38f01552301d0e45f1b76daa51fb03b875cbf788f8c7f3
font_01_sfnt_off0000705e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705E 18568 bytes
SHA-256: c4a7d6ec4adb5f926941c9d8a4fb8d10a178cf54d3fd19c5414a8c2ff4fc644a

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