Malicious PDF — malware analysis report

Static analysis result for SHA-256 1160c6319b069ffe…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 07:00:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d8dc531283d65447332f0350e18f5841 SHA-1: ecb119b1b341e9362d20a0dc0e0eca2d53a2fc07 SHA-256: 1160c6319b069ffe38fd8f2c7515d27950673bfb27e450a0c6765097af3341a1
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that promise game hacks and free in-game currency, such as 'coin-master-time-hack-2021-game-hack'. The document body and heuristics indicate a lure to solicit sensitive information like recovery secrets or private keys, and also points to known malicious redirector infrastructure. The primary IOC is the redirector URL which likely serves as a gateway to malicious payloads or phishing pages.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-time-hack-2021-game-hack In PDF document text
    • http://lib.kesdammedan.ac.id//repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-coins-coin-master-spins_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_off000049a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A4 24964 bytes
SHA-256: 1a1276b2a9d16557db9728911d3ef5982a8ff804b5f23b03283e3b91fbe12fdf
font_01_sfnt_off000082d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D7 18380 bytes
SHA-256: d61a4547520ea8cafecc3ed258c73b3244e9bc9b68d98ecd8e3226df3b2774a6

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