Malicious PDF — malware analysis report

Static analysis result for SHA-256 e222797ff395010a…

MALICIOUS

PDF

46.2 KB Created: 2021-06-04 03:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 05ded7b15d701ae9da15880da06a09b1 SHA-1: a3fe7c8dde5158038b482ea5270d148e51839f40 SHA-256: e222797ff395010a48684ef1f36c6bb718f4ff9a4bc80fc09abc798c7e1149f5
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body, though partially obfuscated, contains a primary URL that is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 5

  • 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.
  • 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 https://netcdn.online/app/479516143/minecraft-building-hacks-game-hack In PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F36 24420 bytes
SHA-256: f8e61550d7def8fbf6b7ff712e29de9339e4293c6497f71922071104f03ae480
font_01_sfnt_off000086df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 2856 bytes
SHA-256: 20dc0c19885f9eb84a70adf762c7af2bb5b336981fcfa4d14a25b177438c211a
font_02_sfnt_off000090b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B4 18628 bytes
SHA-256: 03be4b6b10a4c687c6c89c16a3bf013511456428a76c01e3ee63370f4522cf94

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