Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e1a2a478e3bba3…

MALICIOUS

PDF

35.4 KB Created: 2021-06-25 02:04:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 530ac278611b0a8122694e42079eca22 SHA-1: c3390f8b02590e31a1ee6006ab1729e7137b82a5 SHA-256: d6e1a2a478e3bba36f0e1b8678168e3dab464cdffba855b83f6773ab5400fe34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, as indicated by the document body and heuristic firings. It contains multiple embedded URLs that point to redirectors and other malicious PDFs, suggesting a chain of malicious content delivery. The ML classifier also strongly flagged this PDF as malicious.

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.co/app/431946152/how-to-get-free-robux-2021-on-computer-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/speed-hack-roblox-app_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-on-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pokemon-go-free-coins-android_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/worst-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-old-roblox-bc-accounts-v3rmillion_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-advertisment-youtuve_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-1-000-000-robux-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/tiktok-free-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/easy-robux-com_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000319e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319E 22280 bytes
SHA-256: 33aa18513347def348950f85dc56e45f1d718b828bf304070a4abd2119e338ec
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 19820 bytes
SHA-256: 95b27669e1f440cd3c737efb7c9c72d6191795bbc1113d7813d7bdaa367c8257

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