Malicious PDF — malware analysis report

Static analysis result for SHA-256 58167f468e032471…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 13:47:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07812b5aa9cd9b7a1a39bbc7e851620e SHA-1: c8e02f3b45a28fb8eb3735e3b363697ec65f3aa0 SHA-256: 58167f468e0324718037e9e537355b697bfc059c3f6a06e1611555f6e01c36be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for popular games. The primary lure directs users to 'https://netcdn.online/app/431946152/roblox-free-hair-boy-game-hack', which is flagged as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/roblox-free-hair-boy-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-picture_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005060.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5060 25864 bytes
SHA-256: 2994febfe0b9d8b8762dda603b2d575f21595e420de01e9ac1ebf5ac35556242
font_01_sfnt_off00008cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD7 3512 bytes
SHA-256: 20bf1697e2adf851d40ebe6783dfd7e3ad0961666681d856d811a603d9a71270
font_02_sfnt_off0000986a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986A 18476 bytes
SHA-256: 3fabddb91e4eaecc087c17f99b1c80be23524e7eab6cbec0e1034232c0cbaaac

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