Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b25e6ec2bb37075…

MALICIOUS

PDF

35.0 KB Created: 2021-06-18 19:29:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 803ce028bd5d90920db1b19a2511fd52 SHA-1: a098bced809abeb13115b61e64261f6ca10c9d22 SHA-256: 2b25e6ec2bb3707590685fd5468ba04a96ea1d8864109d4d896860cf4170201a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of offering free game currency or hacks. The document body explicitly mentions 'How To Get 500 Robux For Free 2021' and includes a direct link to a suspicious URL, indicating a phishing or scam attempt. While no scripts were extracted, the presence of malicious redirector links and the lure content strongly suggest a malicious intent to redirect users to potentially harmful sites.

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.co/app/431946152/how-to-get-500-robux-for-free-2021-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-account-cookies_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-robux-free-easy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/you-promised-my-son-you-would-give-him-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-murder-mystery-2-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-stacked-roblox-arsenal-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/libro-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-account-for-intriga-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.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_off00003100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3100 22072 bytes
SHA-256: a345f6ddecf4ad98f5e5bbcbf3088a9758f40b3b825f19c957309492f2013dc5
font_01_sfnt_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 19520 bytes
SHA-256: 6d66fc94cb2fe3538932970bce4bc7727b52b1afe132ee80b99c7edf023863a0

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