Malicious PDF — malware analysis report

Static analysis result for SHA-256 b488701f975f1059…

MALICIOUS

PDF

35.4 KB Created: 2021-06-25 19:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 01103943543c6ad603d32ac582b4c50d SHA-1: b9b5843a379651f44c4ab68789b6b26d8ad323db SHA-256: b488701f975f10597d7aedb0ac739dbbb16ef21756406b5eea66e2686f42b30b
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a "download button" lure, suggesting it is designed to trick users into downloading malicious files or visiting scam websites. The document body and extracted URLs advertise free Robux and game hacks, a common lure for phishing and malware distribution. The presence of a large number of external links, many pointing to PDF files with similar themes, indicates a link farm or SEO abuse tactic.

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/free-robux-ad-2021-game-hack
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/facebook-coin-master-free-spins_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/app-for-free-spins-on-coin-master_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-without-human-verification_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/como-atravesar-paredes-en-roblox-jailbreak-hack_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-coin-master-glitches_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coinmaster-links_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-app_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-minecraft-windows-10-account_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/bloxpink-free-robux_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spin-bonus_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/block-best-robux_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/is-minecraft-vr-free_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-time-speed-hack_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ac.bin
2486f99783e3e768a488ddf671562f9ea61de301d5ca6bdeb871f1f68d3454bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31AC 22584 bytes
font_01_sfnt_off0000648c.bin
19d7dd248fc05cd917f0e6392232a39192bc947aaff840873b9384d4385bd75c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 19292 bytes

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