Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7155521b8b14a8a…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 04:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f22df3448f3ef8b3a24a910c76288ab9 SHA-1: c66a3c4a7f865726f4048c871a03365dff1734e4 SHA-256: f7155521b8b14a8a38b780f3bb8d6a921f3edbfad8332590ebd4d5f6278dd85a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for game hacks and links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Minecraft' and a URL that aligns with the heuristic findings. The primary attack vector appears to be a phishing attempt disguised as a free generator or hack, leading users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-minecraft-for-free-on-laptop-game-hack In PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-generator-for-kids_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_off00004c76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C76 24940 bytes
SHA-256: a2f525b9fa9c567ee9664904adb302afb1b13c66f85da4f33544136d6947e3f9
font_01_sfnt_off000084ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FF 18052 bytes
SHA-256: e6c5d90690ade955def54cc348d22ccb2455245c015e9db3c0b43713c916dea5

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