Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f895976d01bb12…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 18:41:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ba22d67dd5982b900aff18caf40dedec SHA-1: 54fa15181099f7d8139b9955d8e1b02cc70840e9 SHA-256: 45f895976d01bb1239db0964d2db07fe4cadd3c389f2797bace4dff69b1213a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to known malicious redirectors. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common social engineering tactic.

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/roblox-paintball-cheat-codes-game-hack In PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/the-roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-account-selling-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/cheat-codes-for-hoes-roblox-song-id-bypassed_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-survive-the-disasters-point-cheat_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-hack-pastebin-2021-flying-script_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-fly-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/clean-master-free-coins-and-spins_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
font_00_sfnt_off00003113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 22572 bytes
SHA-256: e604c49941db519d0c9cefe998eb0e238ebf9a4ca8a554a6d46fd1e8ef69273c
font_01_sfnt_off00006325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 19204 bytes
SHA-256: 571b0775ad7fbd6a82423e8a25220c69bf837e6627c2f3c787646829167dc4cf

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