Malicious PDF — malware analysis report

Static analysis result for SHA-256 20049dfc6c09e5e0…

MALICIOUS

PDF

35.9 KB Created: 2021-07-01 05:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f45b888874c77ad09eefbd15fad56867 SHA-1: 54cf786c0460f8114f215598638b2d9ef447d57f SHA-256: 20049dfc6c09e5e0d46b538c91821a287c72d52085a3e5fb85ac9524d5ba6add
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which appear to be related to game cheats and exploits, suggesting a lure for users to download potentially malicious content. The presence of a direct download URL and a large number of related PDF links indicates a deliberate attempt to drive traffic to these resources. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/best-free-script-executor-roblox-beginner-game-hack
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-free-item-codes_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/oginject-co_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-rixty-codes-for-roblox-2021_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-hacks-reddit_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-ios_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-hack_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/list-of-roblox-cheat-engines_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/noob-vs-pro-vs-hacker-vs-god-roblox-booga-booga_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-legit-100_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-bit-ly_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003515.bin
a394e6db87ceac42aee5ea0ad10c25967de44d58e121c715636fe91db128938e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3515 22596 bytes
font_01_sfnt_off00006722.bin
2eebb17edf70826332970d913458ab061645574abb62345a8fdd62184b5f9f60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6722 19192 bytes

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