Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7244524bdef4fae…

MALICIOUS

PDF

46.9 KB Created: 2021-05-12 18:32:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9ce1205e34f89eccbc1782392d45bd37 SHA-1: a3385b8f925497557468ccb049d03ce4b77841a7 SHA-256: a7244524bdef4fae185f9b42631efa631aec03480708049eb92ecc99be65d851
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The document body and extracted URLs indicate a lure for 'free Robux' and other game-related items, likely leading to a malicious download or a credential harvesting site. The presence of a PDF link farm heuristic further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/free-robux-without-verification-2021-game-hack
    • http://perpusfkip.upstegal.ac.id/repository/www-free-robux-com_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-spins-coin-master-app-ios_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-clothes-boy_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-earn-free-robux_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-cash_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdf
    • http://perpusfkip.upstegal.ac.id/repository/113-hacked-client_GM479516143.pdf
    • http://perpusfkip.upstegal.ac.id/repository/huskybuscom-free-robux_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-twitter-free-spins_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046c3.bin
5513c4a8bbdb7745b9ec46b09ccca92298a204fd79fd6ba61f3b4faee69dee7e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C3 29312 bytes
font_01_sfnt_off000087df.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DF 2824 bytes
font_02_sfnt_off0000918e.bin
a82984a519d7edf94c6531cfcf7f8df3cbe602e214b877051ae5dee029c294bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x918E 19368 bytes

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