Malicious PDF — malware analysis report

Static analysis result for SHA-256 246074e0334e1479…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 18:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 94b46d143ed8cb92451422a4511df0ef SHA-1: 5963aa0d7ce94ef96c65296a24b95e7a46706c38 SHA-256: 246074e0334e1479e63e299a0505bde6992caa732af6678ff612d19221bc07fc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to websites offering free in-game currency and hacks. The ML classifier also strongly indicated maliciousness. The primary lure appears to be related to Minecraft and Coin Master, suggesting a social engineering tactic to drive traffic to potentially malicious or ad-filled sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/479516143/minecraft-free-minecoins-game-hack
    • http://arkivthy.dk/images/free-robux-without-verification-or-survey_GM431946152.pdf
    • http://arkivthy.dk/images/coin-master-hack-fast-org_GM406889139.pdf
    • http://arkivthy.dk/images/get-free-robux-info_GM431946152.pdf
    • http://arkivthy.dk/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdf
    • http://arkivthy.dk/images/free-robux-pins_GM431946152.pdf
    • http://arkivthy.dk/images/minecraft-reach-hack_GM479516143.pdf
    • http://arkivthy.dk/images/coin-master-level-4_GM406889139.pdf
    • http://arkivthy.dk/images/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://arkivthy.dk/images/free-robux-hack-us_GM431946152.pdf
    • http://arkivthy.dk/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://arkivthy.dk/images/how-do-i-get-free-robux_GM431946152.pdf
    • http://arkivthy.dk/images/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://arkivthy.dk/images/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://arkivthy.dk/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://arkivthy.dk/images/how-you-get-free-robux_GM431946152.pdf
    • http://arkivthy.dk/images/oprewards-com-robux_GM431946152.pdf
    • http://arkivthy.dk/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://arkivthy.dk/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://arkivthy.dk/images/free-coins-coin-master-link-today_GM406889139.pdf
    • http://arkivthy.dk/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c35.bin
ed341ced718fd1cb500c0bf2bde5c77291ba0f1919898963fc5d252d1f5e6034		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C35 24324 bytes
font_01_sfnt_off000082d3.bin
84922fa40070066ef4f1a201e85f9de45244526ee00faa1dc92053ed0f889265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D3 17712 bytes

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