Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05b0238ce5440d4…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 10:19:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a2d638c67b0e30788d2848c209589c6f SHA-1: 9238ec32932b13749f844373af105ea48874aa09 SHA-256: b05b0238ce5440d4e972599774971febf6b82c3f84a3aadd9ad8c7aaa94dde37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as content related to game hacks and free generators. The primary malicious link identified is https://netcdn.online/app/479516143/how-to-get-minecraft-for-free-on-android-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/479516143/how-to-get-minecraft-for-free-on-android-game-hack In PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/battle-royale-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/pokemon-go-free-download-version_GM1094591345.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/play-coin-master_GM406889139.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_off00005061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5061 25128 bytes
SHA-256: 29445cf24b0937ae36f0e29e851af0310a720eb5bf649314a5483a9cdcb8919f
font_01_sfnt_off000088d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D8 18048 bytes
SHA-256: 8059851acc98585c267d1a0730441da2490f7a27bb6efaac05b05bf58a4bb166

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