Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29484ca1fc8fdbc…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 10:55:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 890cb508cb1e4ba4480b0da95cc5f288 SHA-1: d052bb917315064cbfa49552928f694e06ffeb18 SHA-256: d29484ca1fc8fdbc76a9ff222785a7635f830d7d2f79dd871812c0043a44e3c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, directing users to a known malicious redirector. The document body contains multiple embedded URLs, including the primary malicious redirector, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score indicate a high likelihood of malicious intent.

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/479516143/best-minecraft-hacked-client-2021-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/rainbow-orange-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-carf_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/tiktok-free-jazz_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-no-human-verification-2021-no-human_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-a-refund-on-roblox-2021_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_off000030ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EF 22220 bytes
SHA-256: bdfee11f6a7964580c73a1c73b89be26c7b95811c1419c7a68c08a9ae24f96e7
font_01_sfnt_off00006205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 18892 bytes
SHA-256: 2587312e1c2e565bcf22bf8bfb0e6784698aa34c80dd25a5e6f8f055d46fce6a

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