Malicious PDF — malware analysis report

Static analysis result for SHA-256 966613d9e78a23a1…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 11:51:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 451afc95d024773b53d93abef12de5a0 SHA-1: e3702295b6a60701a1263eec77b683fdb747b5d2 SHA-256: 966613d9e78a23a14dbaebe3929531c7ec5d75a48dcda44cf6c04c27336f3fa8
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes game hacks and cheats, indicating a lure to download potentially malicious files. The heuristic firings, particularly PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, strongly suggest malicious intent. The presence of a download button lure further supports the phishing or malware distribution attempt.

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/hacker-para-roblox-apocalypse-rising-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/download-phantom-forces-roblox-aimbot-hack-script-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-gift-card-codes-not-used_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-jailbreak-money-hack-download_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-javascript-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-do-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DC 22888 bytes
SHA-256: d3738dbd020332bf98f8b05d44a6090fd9d9fcf1ab251b6c9cbd05117462d181
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 19288 bytes
SHA-256: f25f9365f5938baa9b6a086b59ba5c8ff178c1c868e24a121ba8f9d42cbf1ae0

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