Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ded69aae2cdb22f…

MALICIOUS

PDF

50.0 KB Created: 2021-06-09 07:31:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ff5f3170af5c679fd70a2eb9e12efc50 SHA-1: 08b4e9137592e3a589831c1ec3a772399b9c3e95 SHA-256: 8ded69aae2cdb22f0ba6af4f82d0c70ac5f1219c2f5437b0ba8627ea2edadfbe
260 Risk Score

Malware Insights

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

This PDF document is designed to trick users into clicking malicious links by presenting them as game hacks or generators. The links lead to redirectors and ultimately to a fake CAPTCHA page, likely to facilitate further malicious activity or exploit user interaction. The presence of multiple links to known malicious infrastructure and the fake CAPTCHA heuristic strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.tw/app/431946152/roblox-code-free-game-hack In PDF document text
    • http://www.salwangurgaon.com/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/master-game_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/robux-today_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_off00005112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5112 32992 bytes
SHA-256: f49df20bf90d0999847f7d5946e2046e237ec8458beeab1117b903e49b7085fe
font_01_sfnt_off00009744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9744 2908 bytes
SHA-256: e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b
font_02_sfnt_off0000a13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA13D 18124 bytes
SHA-256: 5720b637d24de244cdd3d3bc1c41373518bed1bbf14c9c9d4b6b580190b745ff

Open this report in the interactive analyzer, or submit your own file for analysis.