Malicious PDF — malware analysis report

Static analysis result for SHA-256 058fc51923d677c9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 04:24:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 25f8424e0824d4dd0fd5d7e2c15cc4ea SHA-1: 6b6ac7de7846f23dc76eaeb8d29a3fca95b75af1 SHA-256: 058fc51923d677c954fb41b30b4b4d2996bee981b094a2813eb77aca42ca62dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary redirector URL is http://netcdn.tw/app/479516143/minecraft-gun-mod-download-free-game-hack. This indicates a social engineering lure to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirectors and the lure suggest 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/479516143/minecraft-gun-mod-download-free-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id//repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-link-in-description_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-phantom-forces-level-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-promo-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-robux-with-cheat-engine-63-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/cheat-roblox-lumber-tyccon_GM431946152.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_off000031d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D3 22648 bytes
SHA-256: e54be2cc4e449adada91d1394dfc1554d701fa91a96e8d91ecf9c572bfb5ae74
font_01_sfnt_off00006434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 18720 bytes
SHA-256: c40eb1edf819727d779fcdd46a1a495425ff69d655ae06a101e79a8dd4ff089a

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