Malicious PDF — malware analysis report

Static analysis result for SHA-256 f063701e2926bda4…

MALICIOUS

PDF

54.4 KB Created: 2021-06-03 09:03:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bfe748d1f74056d6a4cb9b466d167b76 SHA-1: d7e88c1006b623c4bf5e6a233ef309c4938c3eec SHA-256: f063701e2926bda47572841235047caa6bdcbaa19c7d2dfc1245a9bc66989909
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as game hacks or generators, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a malicious intent to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-roblox-clothes-and-hair-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cone-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-for-offers_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
font_00_sfnt_off0000521a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x521A 38812 bytes
SHA-256: f23ba0e04119415da67d1d8d87df33de76cab18b62ac58144372248ff3810111
font_01_sfnt_off0000a75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA75A 2824 bytes
SHA-256: 1d0cb1023eaa225682b8e7a2c8df4e4c96545ba7eedaf3d9844e51183e9ca189
font_02_sfnt_off0000b106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB106 18740 bytes
SHA-256: 673b3b34a813ca04d64a014aa053bc98d322f3acb459f489fab191ba1a2226c9

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