Malicious PDF — malware analysis report

Static analysis result for SHA-256 800a90db8cd2eace…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 09:02:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dcf29caa16ac248e427aabe1d62af40b SHA-1: 945272ceec619c632895931b8956b6035e465412 SHA-256: 800a90db8cd2eacef14b2b78a58d8fd4333cbd46bab087843c46f6a9a5eaccee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a malicious redirector, disguised as game hacks and generators. The primary link, http://netcdn.co/app/431946152/how-to-not-get-kicked-for-hacking-in-roblox-game-hack, is identified as a known malicious redirector. The document body and heuristics suggest a lure to download potentially unwanted or malicious software.

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.co/app/431946152/how-to-not-get-kicked-for-hacking-in-roblox-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/quick-and-easy-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-admin-commands-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-money-cheat-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-jailbreak-hack-2021-noclip_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-vidoe-star-egg-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacks-to-get-free-robux-on-roblox-in-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5C 22988 bytes
SHA-256: cd7772967a1d2829778bd6eddb6ac48cf9329942a5a9a76add189369647dc7ba
font_01_sfnt_off000061f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 19380 bytes
SHA-256: 7096d2e3cc8220c7024b19ff93cec0fa72d66e1868c8ad20ae4e0d309ee8c282

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