Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec58be6a3065188…

MALICIOUS

PDF

36.3 KB Created: 2021-06-26 03:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b977c8cde4287aab4ad3548fe1df2ff SHA-1: d4b80ef0ff5af70fb1b99b12a51cd3686bee0fdb SHA-256: 5ec58be6a3065188634e7e34ec575d1b5579c713845127bf5736fd4ab379482a
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.co/app/406889139/100-free-spins-coin-master-game-hack PDF link annotation
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-to-get-the-riding-pass-for-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/insane-admin-hack-script-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/robux-sign_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/itos-fun-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-robux-no-apps_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_002_off00003619.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3619 23244 bytes
SHA-256: def8e6f0ad2176b5bc4cebdb6526f0d246fc21a9a78feb8b31593e8a94795de1
font_01_sfnt_off00006ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 18452 bytes
SHA-256: d0c04ff51ad59f6355ad4f24aeb86ad145506544650f67de66568f082738138f

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