Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3365205a1cfa254…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 14:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 67b42f0582969de2055b5f30d5108ad8 SHA-1: 8e500f139d16246ca9104aa4497ea57070b39fa9 SHA-256: d3365205a1cfa25437e3fbc474021921a56cedc8fc63ab9f91e71483adb3610c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-java-hacks-game-hack. The document body, though heavily obfuscated, contains references to similar lures and additional URLs hosted on perpus.ftunismabekasi.ac.id, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-java-hacks-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/login-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-duplicate-coin-master-spin-hack_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
stream_003_off00004c5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5F 25256 bytes
SHA-256: 5cf08d1d03681842494dab72c4368c16977e5439436feca2557ac7aa14b25bd7
font_01_sfnt_off000085d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D8 18020 bytes
SHA-256: 2aa5f75731ce228eb108c5d7ba78fcf9c19ee4c9e640e1738d5748e499ff9746

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