Malicious PDF — malware analysis report

Static analysis result for SHA-256 957dcd82f7844860…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 06:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f1cbba115102b8d0f74cbb4d8de61c5f SHA-1: 1a8133bd9e2fd215450e54b40dab1885edee8748 SHA-256: 957dcd82f7844860db3e8653fe48ce634421cafa73777053fd46f84ac669281d
102 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 0.9971

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-spin-free-game-hack PDF link annotation
    • http://202.56.165.220/digilab/repository/coin-master-hack-apk-download-for-android_GM406889139.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-games-that-actually-work_GM431946152.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_off00004b76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B76 24812 bytes
SHA-256: 08ffcf23c5d73172d2f0a904b59b968ec8903c37ad1e47c8b033ea32ef969186
font_01_sfnt_off000084db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DB 17884 bytes
SHA-256: f64f8d8cd546afe107dcd88d9ce91258665e3d619825ef5ba403a2abc0c27184

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