Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e54b19f534c5116…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 01:19:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b6790c5e2e5defd103f6d29993429ad5 SHA-1: 338e9bba985d69a4c0bdc9c582dbfdef8961324e SHA-256: 1e54b19f534c511666e150adbd49febdf64f4f4366512a06f6601f68afaa5087
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "generators" to lure users. The document body and extracted URLs indicate a phishing attempt, likely to trick users into downloading further malware or visiting compromised sites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/coin-master-hack-2021-link-game-hack In PDF document text
    • http://118.98.227.172/opac/repository/real-free-robux-codes_GM431946152.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/best-free-robux-sites_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_off00004a5a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5A 25368 bytes
SHA-256: 32c7f1255c763ac415444a762d77b99321e36970be8c31e94ceff2caf90a670a
font_01_sfnt_off000083bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BF 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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