Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e327fa913914460…

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 05:21:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b70e72d2d387e99e8b701fcc66627241 SHA-1: 599c9505fb6f235b6377a80a00a6ff10dba5b90d SHA-256: 8e327fa91391446051499a450c64f4c1b0cc4e0db5fceb180bbeaa1154fca5f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators". The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-links-2021-game-hack. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/406889139/coin-master-links-2021-game-hack In PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/pokemon-go-free-bot_GM1094591345.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/pubg-uc-easypaisa_GM1330123889.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/mosttechs-coin-master-free-spins_GM406889139.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
stream_004_off0000518e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518E 24996 bytes
SHA-256: 8ccf07aa74271bedcf3bb11408beff980075468d3cac68a59dacce8104db8399
font_01_sfnt_off00008a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7C 4020 bytes
SHA-256: 7d3617ecf51e14e6cffc9372c4441988c3b6cb3ea010f7512aee6af842ef388d
font_02_sfnt_off00009807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9807 18116 bytes
SHA-256: 6c2a50199d9b46215a875dc9668b69110360059bd5b64fd0f73058dd3f4c0f4e

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