Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d1210c12222995…

MALICIOUS

PDF

43.4 KB Created: 2021-05-12 06:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 00eefd92a01b2ddd8c3d02009fe59ef0 SHA-1: 6ac14043395a8cce606d9d4f358fd12e76da3010 SHA-256: b2d1210c12222995ea1d1ff2e51ed5e7759b7cfa566e55c9327ebf41bd4b965a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The document body and heuristics indicate a lure designed to trick users into visiting these malicious sites, likely as part of a phishing or scam campaign. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/free-robux-2021-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-tool-pc_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
stream_003_off00004a3f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3F 25784 bytes
SHA-256: ab740a2409f83fd6e7947833d827a4de06073ed5bb2f8158d6e26cfb0eadc88e
font_01_sfnt_off000086bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BB 18416 bytes
SHA-256: a2c808792aaeb1607b9c3a91ae122c662faffffe8d42f3cf4118be6ccc5b3e7b

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