Malicious PDF — malware analysis report

Static analysis result for SHA-256 e917f60e23a26853…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 20:18:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2198bd1412b30a4f5580b3a3e5298325 SHA-1: 35ab13f186df4d460edeaba8c739f0002e5031ad SHA-256: e917f60e23a26853de8c26fad77924f1bf1091304cafd64413d22a15c7549d19
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are algorithmically generated and appear to be part of a link farm designed to attract users searching for game cheats and in-game items. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.online/app/431946152/roblox-avatar-girl-game-hack
    • http://otomasi.stikesmuhgombong.ac.id/repository/hack-coin-master-no-survey_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/2021-free-spins-coin-master-link_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-demon_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-spins-cash_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-android_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-free-spins-activegamer_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-avatar-editor-free_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-free-spins_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-many-levels-does-coin-master-have_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-to-get-more-spins-on-coin-master_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-roblox-hair-to-wear_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/apps-to-get-free-robux_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-zone-free-robux_GM431946152.pdf
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-400-spin-link-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c0.bin
b9bcb3d74893357fc45a4fac6a2189d01634690e6dfca2459997f3e1d41832dc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C0 30292 bytes
font_01_sfnt_off00009518.bin
3d1a7e31cbfe166c2953c40b7ca8dd362f8dec7d0da0a12b944125a91a11fcd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9518 18352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.