Malicious PDF — malware analysis report

Static analysis result for SHA-256 8741c9c00f1607f8…

MALICIOUS

PDF

45.0 KB Created: 2021-05-16 21:00:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9e07f6cd71e8764d6d7f7d8ea524443e SHA-1: 6ca7186ce4bd9060c62d819eafd8c2c6c8c597d6 SHA-256: 8741c9c00f1607f8a6a042c7ad0cd3a5c10387903cab77de2ccb7ec2ffec28e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that point to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body, though partially corrupted, suggests a theme related to Minecraft and Roblox, likely to entice users to click the malicious links. The presence of embedded URLs and the ML classifier's high confidence score indicate a strong likelihood of malicious intent, possibly for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-minecraft-printables-food-labels-game-hack In PDF document text
    • http://immo360grad.com/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-a-roblox-account-easy_GM431946152.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_003_off00004aef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEF 30204 bytes
SHA-256: 88ea56af9d779916609130b21f3eacee8681e29be4949f9f051a1cb78394aed5
font_01_sfnt_off00008df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF9 18272 bytes
SHA-256: f2c529c176ea6290bd871c2fd1a1a72e1d93e196016b8d790adf98aeb938da6a

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