Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9192991fc40165…

MALICIOUS

PDF

34.1 KB Created: 2021-06-25 08:12:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 35c360907d57ce445e5ddede484e15b6 SHA-1: dc3c3c716d7393e3298540714dcaf5673f787af9 SHA-256: db9192991fc401654a715ceb06387d18561564176d2be691d02fab4f28c0eba8
142 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized slugs pointing to game-related hacks and free currency. The document body and heuristics indicate a lure for free Robux or Coin Master spins, often associated with credential harvesting or malware distribution. The presence of a 'Password-protected archive handoff' heuristic suggests a multi-stage attack where the actual malicious payload is hidden.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/http-roblox-free-robux-hol-es-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-on-laptop-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-bee-swarm_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-new-have-county-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-offer-walls_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-hats-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-minecraft-account-generator_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_off00002e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7D 22248 bytes
SHA-256: 8d0eedf6cef4d9efab82e57d4912ea02aba44d6698909c79e8eb9d5321cd5f49
font_01_sfnt_off00006009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6009 19068 bytes
SHA-256: 02c6b1bb82b4d087c39f7467b0b32ab470cbdf73cff0481ed51d0990c2fe4d3f

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