Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7aa37027ef4066…

MALICIOUS

PDF

33.4 KB Created: 2021-07-02 00:41:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 70e48a8b1142b9449d7716e5ad153c1c SHA-1: 0980ac001d10cba588b8b6a77d65b677c7ce5194 SHA-256: ee7aa37027ef406636bc05919de56d9496a4a15aba3e51b1fa0f071b701c4caa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and 'generators'. The primary redirector URL is http://netcdn.co/app/431946152/free-roblox-exploit-dll-namedpipe-game-hack. This lure is designed to trick users into downloading potentially malicious files or visiting further compromised sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-roblox-exploit-dll-namedpipe-game-hack In PDF document text
    • http://library.unissula.ac.id/fe/repository/change-name-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/invisibility-hack-roblox-jaulbreak_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-robux-without-giving-personal-info_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-bear-face-mask-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robuxian-hat-ives-off-1m-robux-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-girl-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/win-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-hack-roblox-with-cheat-engine-mac_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/can-you-really-hack-coin-master-ios_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_off00002a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A73 22380 bytes
SHA-256: da6e29139ed18f41cae3b11f35d8b092cc128d66ef94c8ecd84c4ec38d658388
font_01_sfnt_off00005bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF5 19652 bytes
SHA-256: 9d9604964665a7877c207f7c3a06b10e63d9621a89505abef630a2b9c79a6116

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