Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b7c074074406e7…

MALICIOUS

PDF

51.0 KB Created: 2021-06-11 00:53:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 772bbb56bf6a13f872c4ca8fe2b236d0 SHA-1: 09ac69d37d2459be1bf26a4816db58d5a517a2b6 SHA-256: 03b7c074074406e77d87a2c9c5a436ab30ae04881b6b9eddf10f8727050c0018
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as 'game hacks' or 'generators'. The primary lure URL is https://netcdn.tw/app/431946152/how-to-get-free-headphones-on-roblox-2021-game-hack, which likely leads to a further malicious download or exploit. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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.tw/app/431946152/how-to-get-free-headphones-on-roblox-2021-game-hack In PDF document text
    • http://library.ulb.ac.id//repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-spawn-hack-in-apocalypse-rising-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-fly-hack-in-roblox-skywars_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-website-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-denisdaily_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-spin-cheat_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C4 28724 bytes
SHA-256: 0338badc6e244d3dcb95409de7c01e2a246b3877e9173732a15e93b042d47f83
font_01_sfnt_off00009441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9441 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA152 19364 bytes
SHA-256: 2b78680cd664bafc89f45ba1b9b59fe16ddad66652c24456b19cff8763f2bf2f

Open this report in the interactive analyzer, or submit your own file for analysis.