Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e4c08fd0dcbc10…

MALICIOUS

PDF

44.0 KB Created: 2021-05-13 00:42:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: cd7962a309780032a2deeec96f4fec86 SHA-1: 0a19a7d3b9b2054a3c2208a5fe6dff85c11c543f SHA-256: a8e4c08fd0dcbc1073cb689f5a58fb8b0a7ff757fcc78a13db3f4067b0d642f8
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links designed to lure users into clicking on them by promising game hacks and free currency, impersonating brands like Microsoft. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-on-phone-game-hack.
  • 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
  • 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/431946152/how-to-hack-roblox-accounts-on-phone-game-hack In PDF document text
    • https://semanasantacehegin.com/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://semanasantacehegin.com/images/get-robux-today_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/real-robux-generator_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://semanasantacehegin.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://semanasantacehegin.com/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://semanasantacehegin.com/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://semanasantacehegin.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://semanasantacehegin.com/images/how-to-hack-someone-on-roblox_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_off000046e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E1 29468 bytes
SHA-256: 7474544397d97074eb98f149ec36d93fb19944f12fb6cfc4411b6da0eaf28057
font_01_sfnt_off000087ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87ED 18908 bytes
SHA-256: 92714a2af62378a1839a0ba08facac9787f9fdc52ffb1ff0f3d5734c2bdfa821

Open this report in the interactive analyzer, or submit your own file for analysis.