Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0b9de0c8111c5e…

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 00:46:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ae2b5d6c526a1c8f4e3aff019ece497f SHA-1: f260f81940f7e36a41bdd9426f9a3a75cc6bda89 SHA-256: 1d0b9de0c8111c5e93fa05203c84baeb7ded4b611fa08a3fa1905a0b825b9d82
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.tw/app/406889139/free-spins-coin-master-links-game-hack PDF link annotation
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/roblox-gang_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/pokemon-go-free-zoom_GM1094591345.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/btools-hacks-roblox-2021-barbaric-gamer-oficial_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/script-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-roblox-card-codes-2021-5-25-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/hack-grow-simulator-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/todos-los-hacks-de-check-cashed-v3-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-search-free-stuff-on-roblox_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
font_00_sfnt_off000037a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A9 22504 bytes
SHA-256: 65bf83fd5e362d93da113a3488f1e670d49b4804951e7ecf924d7024e85e176f
font_01_sfnt_off00006a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A06 18344 bytes
SHA-256: bbd45a100c9fda56c98402c01c945e99ba5b23a8a144929349c4b2a582275d64

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