Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1fc34a4b5133dcc…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 15:12:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 17667bf5e552c7afb23598966dce20f0 SHA-1: 09218c835922c42304a0f6810416ab6a9caab299 SHA-256: b1fc34a4b5133dcc81d94b4dd72424d8e6eebb9332e26ae2ebffe4d72addd4d6
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 0.9980

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 http://netcdn.co/app/431946152/libro-hacks-para-roblox-game-hack PDF link annotation
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/games-that-give-free-robux-without-pass_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/cheate-engine-addres-for-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-tix-hack-download_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off00003325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3325 22184 bytes
SHA-256: 8af03eb112c543149f6b87681ae1d289188b6d0158e552957aed4b9d2f7b3075
font_01_sfnt_off0000647a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 18932 bytes
SHA-256: c3a57fe737907479796ee49ec140ca9263c450a6ff67079171d20b3f9306e491

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