Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec5e0e1f4e3ec1d…

MALICIOUS

PDF

45.5 KB Created: 2021-06-04 03:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d74d875c18d8eb4fb4ee3f4b515e0481 SHA-1: c400adf5199274434e96c262d7825656b809cf46 SHA-256: 6ec5e0e1f4e3ec1d55a69569685154ec29fd8113b2aad2efda5efa59f2850734
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 0.9864

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.online/app/479516143/free-minecraft-skins-ps4-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pubg-uc-30_GM1330123889.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/without-pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-generator-2021-no-survey_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_004_off000053bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53BF 26092 bytes
SHA-256: 3e4597cc97226661ec8b89efe30193c6daf9d2684cd4323fc6c7882df24c8a6d
font_01_sfnt_off00009071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9071 17956 bytes
SHA-256: f16184d131abb73dd8cdf0449b410f67b95b3645fab407bf2b051681382e3c16

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