Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3dc8bc5fbc720a2…

MALICIOUS

PDF

42.3 KB Created: 2021-05-20 01:30:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6d3a8f8f373fdb6e65b4c01641343e77 SHA-1: 52c29750b72d398a0c86a7eef3c923e94d32d639 SHA-256: c3dc8bc5fbc720a21f14c7495d90711a774305123834e6fa426c7366789ad9ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a "free Robux generator" or "game hack". The primary link redirects to malicious infrastructure known for hosting such scams. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest a phishing or scamming attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-generator-no-verification-game-hack In PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/pokemon-go-free-trade-evolve_GM1094591345.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A04 25208 bytes
SHA-256: 7be605295373eaa0c49f5ef0d0bd376f137d1cb36e7bced77f92e80a6eee076d
font_01_sfnt_off00008216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 18600 bytes
SHA-256: fd611ad94f1c5362e5936d61a0ca6686a852f181e3b69dadbb107f1a26b259f7

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