Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1778ef49ee75f7d…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 19:05:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 54159d7f93b0ea1cea3cce0649af643b SHA-1: 70144aeb2d3357af1be472e746e516c5542e70c4 SHA-256: c1778ef49ee75f7d85b8b06c3523335069dd09a18478565ed0b46c821e368a5e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary redirector URL is http://netcdn.co/app/431946152/comment-cheater-sur-roblox-franais-game-hack. The document body and embedded links suggest a social engineering tactic to trick users into visiting malicious sites, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

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/comment-cheater-sur-roblox-franais-game-hack In PDF document text
    • http://www.eptaviation.com/images/code-get-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/prison-break-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-groups-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/robux-code-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/code-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-use-money-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-wall-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-hack-roblox-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-mad-city-hack-money-francais-saison-3_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/robux-free-dowload-generator-torrent_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000031d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D3 22496 bytes
SHA-256: 78f270c0d529da9d83311149d7ff8f6312538f5c0c3346fa4f1f8820d1e6974e
font_01_sfnt_off000063f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 19440 bytes
SHA-256: 34db420f07f46895be43ddc78bf0a8770506d46f8567717f0b111a84de2be023

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