Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cec79c2c6b4696…

MALICIOUS

PDF

27.5 KB Created: 2021-07-04 19:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 852035e118910880d01f5649a04f464a SHA-1: f9c71e0827476e1af2fffd7179ddbe80534fea94 SHA-256: 45cec79c2c6b46965bc80a503b303b9326db0021ac33aa2c799a500c0f4f34ec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'robux-hack-generator-game-hack' which is highly indicative of a scam or phishing attempt. The ML classifier also flagged this PDF as malicious with a high probability. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 3

  • 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.
  • 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/robux-hack-generator-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-cafe-groups-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/steve-one-piece-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/cheat-apocalypse-rising-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/actual-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/i-want-to-grow-my-account-tiktok-free_GM835599320.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-ccount_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-link-june-2021_GM406889139.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB4 21812 bytes
SHA-256: 396f09aad32d581b7a936913c1f254c5e9781273dabb9b3c185b639279fa205e

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