Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad696d6c126cb29…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 23:08:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a14b09ac2068c4837e29ca7d5b89d0a7 SHA-1: 293096efbc2b918025f274c9751397c94932c945 SHA-256: 1ad696d6c126cb2904ea96b7c915e613d601244832ca0afedaa6ad799007ac10
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits malicious characteristics, including a high ML classifier score and the presence of numerous external links, many of which are structured as a link farm. The document body and extracted URLs suggest a lure for game-related hacks and cheats, likely intended to lead users to download malware or engage in phishing. The PDF_SEO_LINK_FARM heuristic indicates a large number of generated links, pointing towards a campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-hack-lost-world-2021-com-game-hack
    • https://katalog.smkn1glagah.sch.id/repository/spins-coin-master_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-twitter_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spin-now_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/how-to-use-wurst_GM479516143.pdf
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-coins-and-spins_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id//repository/daily-coin-master-free-spins_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-mobile_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-for-ios_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-download-pc_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-spins-coin-master-without-completing-offers_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-hacked-client_GM479516143.pdf
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e5b.bin
e9b99d3310eb82d003bb96292b3ad3c1dc9451cbc1b7183738f194277452b95e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5B 25456 bytes
font_01_sfnt_off000087cd.bin
ec07e37c40cb6df25dbbe69933ee62b5e856f9c115d661528b1aab50c7d0afcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87CD 18824 bytes

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