Malicious PDF — malware analysis report

Static analysis result for SHA-256 0621c1215791aaea…

MALICIOUS

PDF

42.9 KB Created: 2021-05-20 04:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 181ac92949d495ebea28cec4690d2bbd SHA-1: df4c4d1a67a993239158a67ade1057abe289819d SHA-256: 0621c1215791aaead829f4071974c8f04296c6971bf607bcbb0a4a55900cb19b
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/479516143/how-to-get-minecraft-pe-for-free-ios-game-hack PDF link annotation
    • http://sbm-nn.ru/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/tiktok-app-install-free-jio-phone_GM835599320.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-rewards_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-human-verification-or-survey_GM431946152.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
stream_003_off00004c09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C09 25576 bytes
SHA-256: 342e05a96f69a4b09b8ffae7c28b9f8bc2621f28ef4b33e924b7c2214ec6a272
font_01_sfnt_off00008679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8679 18028 bytes
SHA-256: 3ef771fcdeed521b42e77c192c553d5a3bd318aced348222e5c137e62eefd75e

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