Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fb1eac993c7feb…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 08:03:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2bd1babad1ac9b2708c7999970ea058c SHA-1: 341eb44b74595c9e493ffa3a3be3ad15a5026909 SHA-256: f2fb1eac993c7febf3ad2d17754f53840b6e7cb2e755d987a78f174741cee6a8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which are presented as 'hacks' or 'cheats' for popular games, indicating a lure to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI heuristics further supports a malicious intent. While no scripts were directly extracted, the PDF structure itself facilitates the redirection to external content.

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 https://netcdn.xyz/app/479516143/minecraft-education-edition-free-game-hack
    • https://pa-pangkalpinang.go.id/images/coin-master-gold-cards-hack_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-coins-spins_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hacks-for-gold-cards_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/real-working-coin-master-hack_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/minecraft-coins-free_GM479516143.pdf
    • https://pa-pangkalpinang.go.id/images/today-coin-master-spin-free_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/minecraft-pe-hacks_GM479516143.pdf
    • https://pa-pangkalpinang.go.id/images/free-robux-wheel_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-app_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-apk-iphone_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-robux-generator-for-kids_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/free-spin-in-coin-master_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-robux-for-kids_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c58.bin
3cc559efa2b343622902a92b4d6eeaa1322019f9a9ea07dfa775258bcd3a35f3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C58 25472 bytes
font_01_sfnt_off000085e8.bin
50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed
pdf-font-stream PDF embedded font (sfnt) at offset 0x85E8 18024 bytes