Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e2a4870776152c…

MALICIOUS

PDF

46.7 KB Created: 2021-05-12 10:04:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 039011a9f7ea5c3c404f6eba5a19bf08 SHA-1: 6a89fe8054214b6c97eb92faa89e7b90bb8810ba SHA-256: a6e2a4870776152c72f4631064231b3dc8d7acb79d155a5f2e9d52fb7c9c7f54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/easy-robux-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/real-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-verification_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_003_off000048b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B8 26712 bytes
SHA-256: 422110f801531386bf3a82eb41e47010948ce20dc0067dda19cf84f69bf2f456
font_01_sfnt_off000086e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000093f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F5 18260 bytes
SHA-256: 6f89279168fd50a5f3cec5bfd170c68a2c9d13d585bdac07df4f7428a81fa8a5

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