Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a013c0961f87eb…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 18:27:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b874d2428bbb4e134906df317a354a58 SHA-1: 9487cd0f3e7f375855f75a436bf4dc373fa6edfa SHA-256: a1a013c0961f87eb6ce2099cc36ad00ca502622bddb38d263dd421ff80979ac7
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 0.9976

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/431946152/roblox-free-vip-server-game-hack PDF link annotation
    • https://www.arquetopia.org/images/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/wurst-download_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-no-verification-no-download-2021_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_off000048b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B9 27852 bytes
SHA-256: 6534be3517402b169e9ecf42bec996caab24865c113f8732f665d6f38c564f1e
font_01_sfnt_off000089af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AF 18492 bytes
SHA-256: 1efcb06d77819d5fa3ff728d904b801bcae5178dc1aecdda37cae25940162132

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