Malicious PDF — malware analysis report

Static analysis result for SHA-256 748f29dcf026cdcb…

MALICIOUS

PDF

42.5 KB Created: 2021-06-14 01:25:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 06b2505b46bbb1c868ec0ded37c8c52c SHA-1: c6e86de1ce249663cd96a99f4518140c49ebb293 SHA-256: 748f29dcf026cdcb1941b17bcf15de17b00fff6d5944a0207224c898024cc6e5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links. The document body and extracted URLs suggest a lure for free in-game items, likely leading to malware downloads or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-daiblo-in-ultimate-drive-roblox-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/free-robux-no-vertification-no-survey-no-pasword_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/comoser-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/pokemon-go-free-10km-egg_GM1094591345.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-coins-and-spins-group_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
stream_003_off00004a4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4E 24132 bytes
SHA-256: 4c8f132b65ca3a561592077f9f70e91edc0cd9fbebf32626b44805f9589cd405
font_01_sfnt_off000080ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EA 19292 bytes
SHA-256: ebb7680752b2dd27245779657490934c287c125bb750e43ee91ab483020545f1

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