Malicious PDF — malware analysis report

Static analysis result for SHA-256 86016e72ba790044…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 09:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1178fe4d1844696313afd3051709861e SHA-1: e95c544466a192037d20f47b1651e50b1c0f9b80 SHA-256: 86016e72ba790044a64756161013a7953e0a615b516189e095389aa96482c244
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including a critical one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/roblox-robux-hack-game-hack. The document body and heuristics indicate a lure for game-related cheats or currency, likely leading users to a phishing or malware download site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/431946152/roblox-robux-hack-game-hack In PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/noob-vs-pro-vs-hacker-roblox-blob-simulator_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-roblox-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/hacks-for-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-a-free-golden-boombox-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-roblox-hack-for-apocoleps-rizing_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-roblox-promo-codes-june-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-gravity-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-roblox-acvounts_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/best-free-minecraft-server-hosting_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
stream_002_off00003298.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3298 22052 bytes
SHA-256: b03bb36830e4414de0872aea4e6412cf78adaa77dda108e42e054d764d04a4ab
font_01_sfnt_off0000637d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 18796 bytes
SHA-256: ac85a7f36e8d2c6b778aa8e0527eba638abc788d16e2325ecdb460050b0ba6ed

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