Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f6249bd61c73a2…

MALICIOUS

PDF

35.7 KB Created: 2021-06-27 08:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d4da41ba476284d4ce7cbb31bee9e18b SHA-1: a8c5e38683cb2abd079196ab24e4ea8510897bdb SHA-256: f6f6249bd61c73a2c040ed001abd1163db77ceb9286994ca8aa8461a82b0911d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising free in-game currency and hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the social engineering aspect. The primary IOC is the redirector URL, which likely serves as a gateway to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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-robux-mobile.com-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/pokemon-go-hack-free-coins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-jailbreak-free-radio_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-free-minecoins_GM479516143.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_off00003410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3410 22352 bytes
SHA-256: 2ff22115db8e7aa900e8ef1d1523c3b98820019998ce3b2c069b9fda812fcb0b
font_01_sfnt_off000065cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CF 19432 bytes
SHA-256: 94e92cf446312b9d5da531553c2d8c9dcfd99d8ddcb82359af0c529c47898eba

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