Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d46d532d13d3dc5…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 03:36:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 89d72bddd96f172e0e7d296f1c7d115e SHA-1: 94d8132e754a3c958f30ecdcea0884e229e370ce SHA-256: 6d46d532d13d3dc52380cd024fc165a0936a96ce8e20a4cf152c59624dcbfacd
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free game hack or generator. The primary link, http://netcdn.tw/app/479516143/minecraft-windows-10-free-code-game-hack, leads to known malicious redirector infrastructure. The document body and heuristics indicate a scam or phishing attempt, likely to deliver a secondary payload or lead to further 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.tw/app/479516143/minecraft-windows-10-free-code-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-robux-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacks-para-roblox-sin-inyectores_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-god-hack-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/fly-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-no-hack-no-inspect_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-robux-hack-no-verify_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-password-and-username_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-codes-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-play-no-download-online_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-andriod_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-roblox-using-artmoney_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-roblox-pc-download-no-clips_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-2021-december_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_off000031cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CD 22084 bytes
SHA-256: 72b55a0be846adff8e63b407766fdb3f1b602da6e85d361adf5a05be9eecd02d
font_01_sfnt_off000062bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BC 18812 bytes
SHA-256: 64384bfcc58c1bbdf03ee3f883a0be16d7cce96ae7e77f1df9d799b764379cfd

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