Malicious PDF — malware analysis report

Static analysis result for SHA-256 e121197aa650b388…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 05:40:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 17c642117d2ef98fa85b4888c16f63a5 SHA-1: d26eeba0e0c8c979d877b20e4afcf6f3b3258025 SHA-256: e121197aa650b388a020f59d73f007dd58d06439ce2df7090186ab0b72626a40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to a known malicious domain, masquerading as game hacks and generators. The document body explicitly mentions 'Codigos Para Hackear Cuentas De Roblox' and includes the malicious URL, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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/codigos-para-hackear-cuentas-de-roblox-game-hack In PDF document text
    • https://www.vista-design.hr/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/sbh-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-get-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/tiktok-likes-free-trial_GM835599320.pdfIn PDF document text
    • https://www.vista-design.hr/files/with-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/ben-toys-and-games-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/dungeon-quest-cheat-2021-roblox_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/roblox-free-shirts-xxtentacion_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E95 22904 bytes
SHA-256: 834aab3d2aa764309f0f82da084f4e79d28729299243978d0b2733e680b2585e
font_01_sfnt_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 19516 bytes
SHA-256: 912337c18934aa1ead75455a0662c0159dc0640fe2e447d612f618d5db40f6c4

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