Malicious PDF — malware analysis report

Static analysis result for SHA-256 060f4ec2a8e48d4d…

MALICIOUS

PDF

45.6 KB Created: 2021-05-11 02:08:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 97618d5b22baf8fe3c945dee184d3ed5 SHA-1: 0c076a0ec00c51ec67b4e37f2b6cbbffd9fbb264 SHA-256: 060f4ec2a8e48d4de47cc3106f1adddf6ebaf856857ee01e092ae8324f3b3d22
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free Robux" or "game hacks" as a lure. The primary redirector URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-doing-anything-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leveraging social engineering to drive traffic to malicious sites.

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/431946152/how-to-get-free-robux-without-doing-anything-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.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_off00004b8c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8C 28732 bytes
SHA-256: fef5927091fa2eef290516a05ae916db1b8c0a6798163f6caea4982f8005a005
font_01_sfnt_off00008cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 19400 bytes
SHA-256: 843e7c6de0628ecb74dfde19cdfb212261a67f0d6d996bc16e2547f6c0bce3d3

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