Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de3b109f828104b…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 22:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 259d272033411896ce0760378bef269d SHA-1: 68490af084ac516073e0e81c7970752df1a6eb61 SHA-256: 8de3b109f828104b0513c4ec38c2146fc1bd467963834d1de2f34542438e2e59
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to lure users into clicking on them by promising free game hacks and currency. The primary redirector URL, http://netcdn.co/app/431946152/no-download-roblox-free-game-hack, is associated with malicious activity. The document body and heuristics indicate a scam or phishing attempt, likely to lead to further malware or credential harvesting. No scripts were extracted from this sample.

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/no-download-roblox-free-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-no-generater_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-robux-hacks-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-find-roblox-hacked-servers_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/old-roblox-logo-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hacke-bubble-gum-simulator-de-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-generator-no-human-verification-real_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/banning-simulator-roblox-get-all-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/infinite-jump-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/pubg-uc-10_GM1330123889.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-become-a-builders-club-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-cheat-theme-park-tycoon-2-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-coin-master-spin_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_off00003030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3030 22780 bytes
SHA-256: 753322a4c3155bb6dc824d0902c0ec303ae8b8ad0596daa7b10aae884490748c
font_01_sfnt_off00006377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6377 19156 bytes
SHA-256: 022b40c389c8d4bec1d7ed983444675df95103792058fd69c82e164c3da6e5a0

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