Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f10b5c29f19ac0b…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 09:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7c9e73104a1457e401cc30ceeff3bdbb SHA-1: 78aeca692beab6c602f1ad15d0cc1949e7dd033d SHA-256: 0f10b5c29f19ac0b997e3dd3847be74cd85635f7fe01e30881ce6bac41dae05b
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to websites offering game-related 'hacks' or 'freebies'. The primary URL, http://netcdn.co/app/406889139/how-to-get-free-spins-and-coins-on-coin-master-game-hack, suggests a scam or phishing attempt to lure users to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

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/406889139/how-to-get-free-spins-and-coins-on-coin-master-game-hack
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-shield-link_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-fb-free-spins-link_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-limited-items-roblox_GM431946152.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-golden-cards-hack_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-coin-master-gifts_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-2021_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-v344_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdf
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000326c.bin
ef70e9c6922378eb117be43b5b734cbeb30b098ea3b0d6690f368ae396400f0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326C 22832 bytes
font_01_sfnt_off00006567.bin
b5acc537c59d1b7fb5e9a8b7451230baa0910c2ee96a0f773c75b2c56351fbac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 18512 bytes

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