Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab60ec4816ac5a0…

MALICIOUS

PDF

36.7 KB Created: 2021-07-05 23:51:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8511c6fee79bf0ac05a7b8e15557c2fb SHA-1: de6999ba12722625e0121a3a4932717e25b2e519 SHA-256: dab60ec4816ac5a00ea5a30e180bda87b2c43c94e342135ccf10185a6d1e4006
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/406889139/free-spins-coin-master-without-completing-offers-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-robux-100-real_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-obby-gives-free-robux-with-game-link_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/pubg-uc-yatrma-sitesi_GM1330123889.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-spilen_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-app-download-free_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_002_off00003867.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3867 22752 bytes
SHA-256: 941d57bcbae183db17b3f3317ebc4bd7b555d9e5b235feedbe0fda25ef8eabaa
font_01_sfnt_off00006b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B02 19012 bytes
SHA-256: 38b4359b19ef97a63db652ebdf9cc47704fd0bffe869da76ab01049d051bc034

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