Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88ba058df5ee7f7…

MALICIOUS

PDF

36.6 KB Created: 2021-07-05 11:09:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29eedd2919ef03be5c7d3c5fa4c203d0 SHA-1: 09ac9cbe982eb4bd34f117e90aa9737f78e68d92 SHA-256: b88ba058df5ee7f73b55f98e9906fc13aa541931bee3a8a4e0b461837d70b995
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The document body and heuristics suggest a lure for game hacks or free currency, aiming to trick users into visiting the malicious URL. The primary malicious link is http://netcdn.tw/app/406889139/free-apk-mod-coin-master-game-hack, which likely leads to a further malicious download or exploit.

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/406889139/free-apk-mod-coin-master-game-hack In PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/hacker-defense-system-roblox_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-obby-link-in-description_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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
stream_002_off00003737.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3737 23244 bytes
SHA-256: 4f88c5c25eaf70460dee7ab6a782719115f6b4ef944406b6124503ff1aedb9fb
font_01_sfnt_off00006bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB0 18520 bytes
SHA-256: a137f06962d2c5ff697a8afc88ae41971466384d99c4336464e264640f3eb3cb

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