Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ca98db492a673a…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 18:15:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3484920edc47a242568c5a8f9d4f59d5 SHA-1: 0d5652abddc8b3c80b8e99c5a94038945fa12ec1 SHA-256: 30ca98db492a673a120c83e1dcbced464f40acf82f6c8c4ef927d7323ab728d5
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks and generators. Several of these links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and extracted URLs strongly suggest a focus on exploiting user interest in free in-game currency or cheats for games like Roblox and Coin Master.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/roblox-cheat-codes-feeling-of-falling-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheat-engine-admin-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/quelle-est-ladresse-des-robux-dans-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheat-roblox-gas-oil-simulator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-group-payouts_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
font_00_sfnt_off0000310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310D 22996 bytes
SHA-256: 56dc668d3328c46121407ea1c8cc547567c186028d339e9fb1a4b6b25f4951a4
font_01_sfnt_off000064ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 19216 bytes
SHA-256: e89728e3edb7e2d9b8c4d45efe6bd8c8e697a365b5d3b75222b839bfebfb1c10

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