Malicious PDF — malware analysis report

Static analysis result for SHA-256 419e9b74886db908…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 08:00:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 95d389fdb17a20f860d17b337e7f18ca SHA-1: 8cc81027090ba358ed7022c16bbdf614e49fe11a SHA-256: 419e9b74886db908c0f8236824859b0fa35acd5ca454948311d8a92efcb2adb2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The sample is a PDF document that impersonates Facebook to lure users with the promise of Roblox cheat codes. It contains an embedded URL pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/building-simulator-cheat-codes-roblox-game-hack.
  • 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/building-simulator-cheat-codes-roblox-game-hack PDF link annotation
    • https://www.ak-oroslavje.hr/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-how-to-get-paid-games-for-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-glitch-hack-download-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-and-tickets-hack_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robux-for-free-generator_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-car-dealership-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/hacks-para-db-rage-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-com-free-online_GM431946152.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_off00002fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC3 21748 bytes
SHA-256: 5ec68523c3d2f46b9f7a802d5b7ecb5151f01f9828ec593a90eff9c4e40e766d
font_01_sfnt_off00005fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC5 19448 bytes
SHA-256: ca80d46c2455afea110de88ccd3b32f7058b624e0b449802b17410f845ff5220

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