Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9898877eb2a0673…

MALICIOUS

PDF

41.1 KB Created: 2021-05-19 16:11:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cfe7d42df3cf5788d8f92d10f6b30818 SHA-1: a2da1ec6fc822960f8b201df39dc6cb415376690 SHA-256: f9898877eb2a067301ba0f93a13cc80672a80648b80693d5f33f72d96e8896a3
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that redirect to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests the document is designed to lead the user to a malicious site. No scripts were extracted, but the document's structure and embedded links point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/1330123889/pubg-uc-logo-png-game-hack PDF link annotation
    • http://io24.com.ar/images/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004675.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4675 25092 bytes
SHA-256: e4026aaec48cf186af726011fd96790b6790cc8ab5ef7baba3ada521103a01c5
font_01_sfnt_off00007fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAD 18040 bytes
SHA-256: ad23ac1f6f94fdb7f7caaf52569057f6cea5742556dfe0a3e7cb8ea1a8ee4f70

Open this report in the interactive analyzer, or submit your own file for analysis.