Malicious PDF — malware analysis report

Static analysis result for SHA-256 1605b3a59f12520e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 10:04:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 466c9052318e4adbf3875a99e036054b SHA-1: 0146cdf5fa2dfa86b583b5a739f2d379838e76bd SHA-256: 1605b3a59f12520e0704aa5e4c6dd7675e3ea45c11a1e09b2c35e0885485931f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency, directing users to a known malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially malicious content. While no scripts were explicitly extracted, the nature of the lure and the redirector indicate a high likelihood of further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spin-bonus-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacking-in-to-denis-account-gone-wrong-im-sorry-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacked-roblox-faces-id_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-ps3-download-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coins-generator-roblox-high-school-2_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-yammy-xox-hacking_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/wall-hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-accountsd_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/wings-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-generator-no-human-verification-2021-pc_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
stream_002_off00002f39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F39 22856 bytes
SHA-256: 39ad772e17d6687402099a6c5edfeab4407d617a10b623feec7a7ac451e77a40
font_01_sfnt_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 18532 bytes
SHA-256: cf1e246601eea942372bc34199523b5fc19dc03bf6217937d361a70e9348a69d

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