Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0a1c610991e50d…

MALICIOUS

PDF

36.1 KB Created: 2021-06-23 08:54:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d1733097c4f66d4f3cca7a9a04d4e255 SHA-1: de8e70d7f91ef80121f879e9ed1ca30a3ef310f0 SHA-256: 1c0a1c610991e50dbb06c9c805ac25cbec82705143868a8555f9f8b4637f18d3
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using keywords related to game hacks and free in-game items to entice users. It contains numerous links to external PDFs and a primary redirector URL, indicating a phishing or scam attempt. The document's structure and embedded links suggest it's part of a link farm designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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.
  • 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-hack-admin-script-game-hack In PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/fps-free-games-best-on-roblox-2021-easter_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-no-password-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-do-i-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-to-get-robux-fast-for-free_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/roblox-bubble-gum-sim-free-pet-giveaway_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-robux-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-codes-that-work_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-roblox-transprent-pants_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/an-app-that-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off000032cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CD 23136 bytes
SHA-256: 48d512ca66f7d690247262da0895bb7215581557e9f5f0e47f886be7554b1760
font_01_sfnt_off000066f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 19488 bytes
SHA-256: f8aa77bcc38034408de1616fff0b1b61a65748ea579434fc80341ad5b2270a02

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