Malicious PDF — malware analysis report

Static analysis result for SHA-256 5867e172fdcfaf99…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 03:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f6f183d4eb660b1b7919941bce558a63 SHA-1: f302a221438b03cd63de6b684b333ee850675542 SHA-256: 5867e172fdcfaf998126302b205e30976002a12025d5f14affa376a213425ad9
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and generators for popular games like Roblox and Coin Master. One prominent link, http://netcdn.co/app/431946152/roblox-cheat-engine-swordburst-online-game-hack, suggests a direct lure for game exploits. 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.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-cheat-engine-swordburst-online-game-hack PDF link annotation
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/roblox-scam_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/shirts-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/is-roblox-free-on-ipad_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/how-to-join-anyone-on-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3143 22420 bytes
SHA-256: 20060eba516369596b38d240d541f817d3f9851262c6f50e2a66e09d890f7c53
font_01_sfnt_off00006346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 19352 bytes
SHA-256: a5cb6d7b034724345849c25c77801d66b03713bce24e8142cff4b4311121ee49

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