Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0cb25407a88970…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 23:16:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 17b0a4ae8969060bdf1584f4a869ad52 SHA-1: 0300ae4eda1fd59028be20185ffb64557c4efe96 SHA-256: 4a0cb25407a889704f6c615f730fdd4b1d44c61fe22765c9167ca280987edd0b
142 Risk Score

Malware Insights

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

This PDF document contains numerous links disguised as game hacks and free currency generators for popular games like Roblox and Coin Master. The primary goal appears to be directing users to malicious websites or potentially triggering downloads of further malware. The extensive link farm and the 'game hack' lure strongly suggest a social engineering tactic to compromise users.

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-followers-hack-game-hack PDF link annotation
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/hack-peoples-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-diamonds-coin-master_GM406889139.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_off00002f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F51 22372 bytes
SHA-256: e79be30b167ba2a8c352357dbde01637665270bf4ff0f931aa5139c32ec2b082
font_01_sfnt_off0000610c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 18984 bytes
SHA-256: 46c3ea2d2b88e68b410a3699e745caa4bca57c6450e2da8aa0980e0829604519

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