Malicious PDF — malware analysis report

Static analysis result for SHA-256 02197f3ab57e93ac…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 11:57:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e219023f7e65e0f6e6cbf6a184f0c7c2 SHA-1: e07b95e8d384618d723e61372bd5815720f6fce0 SHA-256: 02197f3ab57e93ac51e80eb833606de4c6851d31aa45e2f95b6e64c44b237209
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 0.9865

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.online/app/431946152/how-to-change-your-username-on-roblox-for-free-game-hack PDF link annotation
    • https://www.insol-europe.org/uploads/files/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/minecraft-pe-free-apk_GM479516143.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
font_00_sfnt_off00004f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F93 23488 bytes
SHA-256: eb237e2ab64784b75cd316815392124210a9abe8eff472c6e208248e11915dcb
font_01_sfnt_off0000849f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849F 19540 bytes
SHA-256: 93794ea5a6c5acfa8b9ea336c7fa02a00f4c27ab4f9922f3137d25115e5793d6

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