Malicious PDF — malware analysis report

Static analysis result for SHA-256 17252e493a452830…

MALICIOUS

PDF

47.7 KB Created: 2021-06-09 11:05:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3bcaf6fa171028445b683afe21ad6c24 SHA-1: 6cc6875e1ddba74bfbbe73d6382841c9677fb33b SHA-256: 17252e493a45283044c27128226a674c7a5b2d0a1ddf9c95a271d422b8bf86c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body, though partially corrupted, contains a URL that matches the malicious redirector. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/roblox-free-dominus-generator-game-hack In PDF document text
    • http://lib.mbp.ac.id/repository/roblox-cheat-engine-downlaod_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/jetpack-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/tiktok-free-printables_GM835599320.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-actually-get-free-robux_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
font_00_sfnt_off0000508e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x508E 25732 bytes
SHA-256: 3d8d53be3dbf7bb1a7e47501d2a48e1aced19ab9fc3ac9171b86885132157f31
font_01_sfnt_off00008be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE7 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 18968 bytes
SHA-256: e9db0b14df31ba8cdceacde88736f6e4bcf36bfef1b6951a102517ba13215cd8

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