Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5f11c08acc141f…

MALICIOUS

PDF

44.4 KB Created: 2021-06-08 11:15:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a6760c5c783da5db732683c20f90940d SHA-1: 25c70de52a76c3762ae1177ee18937232c7f7c8e SHA-256: da5f11c08acc141f2531394a6bf38c7992ae48a1f8d0ac328940bbfa053664c3
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 0.9865

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.tw/app/431946152/hacks-for-roblox-for-rubox-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.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/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/lrgit-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/regal-world-coin-master_GM406889139.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/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-without-verification_GM406889139.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
font_00_sfnt_off00004f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F18 26312 bytes
SHA-256: 3e80bbf26da53242063aa09d94654c6d51c2df6d94c11d1dd4958239b08d7153
font_01_sfnt_off00008a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 18488 bytes
SHA-256: ed6544228816e186e514a7d1fff949402a50a192262d30ee07f07091ccc94ba7

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