Malicious PDF — malware analysis report

Static analysis result for SHA-256 99c4d115ba31340e…

MALICIOUS

PDF

39.3 KB Created: 2021-05-22 04:37:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 037039065e5d592d1cf38b4158654660 SHA-1: 5f8bf91aebfc411470afe5b0c558315a69ffda2b SHA-256: 99c4d115ba31340e1fcefb6c37673aa5bb4e3c9a3943670e61c9f8d9166f5f87
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and free item generators. The primary lure is a link to 'minecraft-free-download-windows-10-game-hack', which is hosted on infrastructure flagged as malicious. The document body also contains a call-to-action phrase, reinforcing the deceptive nature of the content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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-free-download-windows-10-game-hack In PDF document text
    • https://ambarevleri.com/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://ambarevleri.com/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://ambarevleri.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/cm-free-spin-link-today_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_off000034e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E7 29948 bytes
SHA-256: ccb5935f2728a3b6c4544837765844921e7b204942b96c8388f650c48c45be60
font_01_sfnt_off000076d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D3 18764 bytes
SHA-256: 1024eac42dda9887ab3e6b3a3052baf0f02eb021d29d3096c75228bb34fedc86

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