Malicious PDF — malware analysis report

Static analysis result for SHA-256 771a2fe3959bb924…

MALICIOUS

PDF

45.5 KB Created: 2021-05-16 06:18:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 33f825efac56a317c688d416b0317850 SHA-1: 113566f8b9fbd3dc5f21ade62e9dd26856c28919 SHA-256: 771a2fe3959bb92426a193d66bffa48b6e531769511b47c34bf7c39477e74ea2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 https://netcdn.xyz/app/406889139/coin-master-15-free-spin-link-of-last-5-days-game-hack PDF link annotation
    • https://www.ak-oroslavje.hr/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-do-i-get-free-robux-on-roblox_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/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_003_off00004bdf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDF 29488 bytes
SHA-256: 1af393d81d11e68cf86357047d7fa2e8630c7a0fa77b77e49ee9a050d3b1b20f
font_01_sfnt_off00008e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E90 18644 bytes
SHA-256: 4144dbe1534d0325d37e4c6129895ddb34a2bc26123e242025982d4ceef1bd2b

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