Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc677fe6dca9db19…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 15:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7704941f36d43ea257ec85af05bf42c1 SHA-1: 9b9b55e5c7e3ccf310248b85528f6a9f4dff7008 SHA-256: fc677fe6dca9db199bde90c9aa2ad7be4c3bb69f1e27393002693cff6960bf33
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary URL pointing to a known malicious redirector. The document body and heuristics indicate a lure for game hacks, specifically targeting Roblox users. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links suggests an attempt to lead the user to a malicious site for further exploitation or credential harvesting.

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-lua-hack-scripts-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-phantom-forces-free-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-cheat-codes-for-pc_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-best-games-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/sword-fighting-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/20-best-site-to-have-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-para-ser-vip-en-flee-the-facility-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robloxcom-robux-and-tickets-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-game-hack-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-download-unblocked-at-school_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pokemon-go-free-youtube_GM1094591345.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-zone-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCB 22668 bytes
SHA-256: 5f36986bd6cbf45f83bcbb9dff26b29ff18e50f5986a592e6417c0afd2bd02c8
font_01_sfnt_off00006062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6062 19196 bytes
SHA-256: 082e2f1fbef1926460d5499ebfe5d178a3687e38a14609a68f9c8012141216a9

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