Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d578d65fd5fa210…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 12:19:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 239bb5cd9f1756a04e0607f65ec8b525 SHA-1: 9ddd30c6c4441b63f018c0d226d50a67289e3bc5 SHA-256: 9d578d65fd5fa2107554d6edddca75b49344fe0e9bd08fc655d6cdcccff60dca
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to external websites that advertise game hacks and generators, such as 'toolbox-for-minecraft-pe-ios-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of these lures suggests an attempt to trick users into downloading potentially unwanted or malicious software. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/toolbox-for-minecraft-pe-ios-game-hack PDF link annotation
    • https://www.knjiznica-oroslavje.hr/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/wurst-mc_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/classic-minecraft-net-hacks_GM479516143.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
stream_003_off00004e66.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E66 24708 bytes
SHA-256: fdf1bf89f04e015d4af5c79feed245ccec1603bc19b6546e1807cd07208067e3
font_01_sfnt_off00008589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8589 18308 bytes
SHA-256: dc3ccbb79e5b5e3c2e3f1df788125855a4eb2a90c1a23b445c8862bc1b3de69c

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