Malicious PDF — malware analysis report

Static analysis result for SHA-256 704d70c88b66186d…

MALICIOUS

PDF

42.0 KB Created: 2021-05-10 23:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1c22bcc71194a96827820999858159a9 SHA-1: ee559dceaf548c0ebcab0e5882c661526b6cb872 SHA-256: 704d70c88b66186de99a7cab27423e8aca89ff9c15a30cbde4c1d99ca803abd1
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 0.9971

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 https://netcdn.xyz/app/406889139/http-bit-ly-coin-master-hack-game-hack PDF link annotation
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://elearning.mansatukotabandung.sch.id/__statics/gudangsoal/files/robux-games_GM431946152.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_off0000484d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484D 24832 bytes
SHA-256: 3d2c826925d0dd809dda73f92c32512dfd55191a6a5f4aa8322350e500018d4a
font_01_sfnt_off000081b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 18288 bytes
SHA-256: 5fbed04530fd5233e85522bcf95dabe2bab0495a9adc2bbbbcde83bb79acff30

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