Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5796ad4a7c4eda…

MALICIOUS

PDF

30.3 KB Created: 2021-07-01 17:58:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: edf3bebeb0f470f56fa363b991ed7a19 SHA-1: 776ba0945d343f8d41ecbad84617a1c6f6a78392 SHA-256: 7d5796ad4a7c4eda78bf25bd7a3232bd40c5d6d4bd00fb3026835be152e47220
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-with-synapse-game-hack. The document body and embedded links are designed to trick users into believing they can obtain free game-related items, which is a common lure for malware distribution. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious payload being delivered.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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-robux-with-synapse-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/admin-roblox-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hacks-for-mortem-metallum-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/snapes-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-code-cards-website_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 21476 bytes
SHA-256: a2674954ddc6168cd6b8de732b9c5ba09d8b3f5d9e6ca9bd6ceccabdd10ae271

Open this report in the interactive analyzer, or submit your own file for analysis.