Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca30e5d5b1000c5…

MALICIOUS

PDF

41.0 KB Created: 2021-05-14 10:00:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34bf81d600b497c83286c0649057ceb0 SHA-1: 023f34842e882b9ba847e230718be3d5d693595b SHA-256: fca30e5d5b1000c5244e96c26ccf38868d0e81224c2b784ef22475d02f294d43
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 0.9971

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/406889139/coin-master-spin-hack-game-hack PDF link annotation
    • http://algierimasonry.com/images/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/earnrobux_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-robux-with-no-verification_GM431946152.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_off00004812.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4812 24160 bytes
SHA-256: 7a59043d0beee380852cd998994e1562f6163f92ce0d18b66bafe11396b22ddd
font_01_sfnt_off00007ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 17892 bytes
SHA-256: 7f3ff29013eb9f1a81458cbc85dd3db40ecf793c6bb68bdfdc199744a029032c

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