Malicious PDF — malware analysis report

Static analysis result for SHA-256 019bb60c2f68cca1…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 06:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 038e813efd23972a28f03eb8eeeb89c0 SHA-1: 6bbd37b567e956b500b1fa8beb992ba477fbb8ae SHA-256: 019bb60c2f68cca191615a23228ea493bc694cc72a49f9625a64fac4c0731b69
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The presence of a visual download button further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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.online/app/479516143/free-minecraft-codes-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/tiktok-free-fans-video_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-multiplayer-free_GM479516143.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_off00005157.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5157 24632 bytes
SHA-256: d879fe5701d92b1598be8bc6621239abbd508078a76fc64f5fd3171f2cf62b31
font_01_sfnt_off000088f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F1 2856 bytes
SHA-256: 20dc0c19885f9eb84a70adf762c7af2bb5b336981fcfa4d14a25b177438c211a
font_02_sfnt_off000092c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C6 17884 bytes
SHA-256: ca0982e5699fcbbad1c272e9f6df792bd17b0fef580afa6f1747d77cedc77eee

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