Malicious PDF — malware analysis report

Static analysis result for SHA-256 e777e3dc90408921…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 12:44:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b1f4fea7604bcbd746d1a172d4154637 SHA-1: 749414bd8d929228c3cf166cf38bbe9f30e43304 SHA-256: e777e3dc90408921e5d8a46a3e36e11ff224fd1c540481dda8a5698053b50659
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures for popular games like Roblox. The document body and extracted URLs strongly suggest a phishing or scam attempt aimed at tricking users into visiting malicious websites. No scripts were extracted, but the presence of malicious redirector links is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-free-robux-bots-are-back-game-hack In PDF document text
    • http://bressanassessoria.com.br/images/http-rbgenappzoneteamcom-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-roblox-gamepasses-2021-easy_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/delta-roblox-hack-buy_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-hack-comment-avoir-de-largent-facilement-sur-jailbreak_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-april-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-shirt-templates-roblox-lyon_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/lointh-gaming-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/robux-codes-2021-free_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-fps-hack_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/easy-hacks-to-get-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-for-kids-who-cant-do-human-varication_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-no-human-verification-or-survey_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_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22696 bytes
SHA-256: de1a0e73a27efff0015c8d52066f32a78357c7b1a0fed93b1ac755de24969e35
font_01_sfnt_off000061e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E8 19064 bytes
SHA-256: 9166f9f87d231ea11a6ecbfe99d44acc092dddd18b9dab90aa74b2b1ad64f1cf

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