Malicious PDF — malware analysis report

Static analysis result for SHA-256 26aaca82f389aced…

MALICIOUS

PDF

36.1 KB Created: 2021-07-04 11:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c85e1a0103cd4961fee119520b61521e SHA-1: 095e6b3334cdc578d5eb30286f704734457f99f4 SHA-256: 26aaca82f389acede88632e9716e3ce27f0a1ba247b5dcfd7b4bda0172d228ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirect URL is http://netcdn.tw/app/835599320/how-to-get-followers-on-tiktok-for-free-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of multiple malicious links strongly suggests a phishing or malware distribution attempt.

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.tw/app/835599320/how-to-get-followers-on-tiktok-for-free-game-hack In PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/i-will-hack-and-not-kill-parent-roblox-group_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/gratis-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-lvl-7-roblox-executor_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/descargar-roblox-para-android-hackeado_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/roblox-hack-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/premium-membership-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/pokemon-go-free-spoofing_GM1094591345.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_off0000369e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x369E 23116 bytes
SHA-256: cb5ad7137a8f5f94c5728eeba924fb0f74e79d7a8f02b1dcbdb9045c5cacc309
font_01_sfnt_off00006ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 18208 bytes
SHA-256: bfdcb55836daafa7806ce4ad13148362cf6f8dfc65431a156a5018e5127e3293

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