Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93ba5b484565ed0…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 18:07:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d39b0d33b858a6f48527996f6cf092e7 SHA-1: 073ec2698e2aa3005ffaa10479c38e12cd67c1fe SHA-256: c93ba5b484565ed0e58fefe35d94879f617ed70abfa9faa7f3c21d50e5b8de5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering game hacks and currency. The document body, though partially obfuscated, contains references to 'free generator / game hack' and URLs that reinforce this lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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.
  • 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-do-you-get-roebucks-for-free-game-hack In PDF document text
    • http://briankellyforcongress.com/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://briankellyforcongress.com/images/coins-master_GM406889139.pdfIn PDF document text
    • http://briankellyforcongress.com/images/how-to-actually-get-free-robux_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_off00004bf0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF0 26080 bytes
SHA-256: 72d222081c8495e7b5a2e9cdeb57ef2173022e180b711d000cfb5e03d365d91b
font_01_sfnt_off000088c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C5 18572 bytes
SHA-256: 9b0926f851b5352a1c94160dd5570857b20d788284ad3dea1803889ab4bbc101

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