Malicious PDF — malware analysis report

Static analysis result for SHA-256 a380a71350a3af17…

MALICIOUS

PDF

36.3 KB Created: 2021-07-02 04:24:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c2776c02cef54c8c21a1b36816fdd3e8 SHA-1: acc11d86386cea53153f20157249b95c1518700c SHA-256: a380a71350a3af1775c22ad5073f894f869954f3ecb1ed4611f4ef2f11117371
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirectors, specifically advertising game hacks and generators. The primary URL identified, http://netcdn.co/app/431946152/kron-hack-for-roblox-game-hack, is flagged as a malicious redirector. This suggests the document's purpose is to trick users into visiting this URL, likely leading to further malware downloads or phishing attempts.

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/kron-hack-for-roblox-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/pokemon-go-free-and-home_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-blox-piece-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-money-codes-dor-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-by-inspecting-element_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cheats-fr-roblox-madcyty_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/synapse-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-snow-shoveling-simulator-how-to-get-free-money_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-private-servers-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-for-roblox-noclip_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/pokemon-go-free-app_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-free-verdienen_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-simulator-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/mobile4free24com-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-script-runner-roblox_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
stream_002_off000034ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CE 23492 bytes
SHA-256: b1e29b5f5ecc637b179ed27fec8f0d99a51d0654de2368da74a6ca21183fbd2d
font_01_sfnt_off000069ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CA 18820 bytes
SHA-256: 108a6877cd47611bb32601121d0f1da4599602770fc68b34f288c0d90f25df6e

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