Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7bb72e48945418…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 07:25:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ae07ea2df0a4680d614ee4d83e5e6e5b SHA-1: 69af7322c6b80fe5b1c19a14f75b5f92ba2fbcf2 SHA-256: 1b7bb72e48945418335fd4f6396c872d107e6606ae7053afbec969a8dcc858df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirectors, specifically advertising "free generator / game hack" content. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-free-spin-and-coins-fbid-links-game-hack. While no scripts were explicitly extracted, the nature of PDF redirects often involves JavaScript to facilitate the redirection, hence the inclusion of T1059.007. The document's purpose is to trick users into visiting these malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/406889139/coin-master-free-spin-and-coins-fbid-links-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/rbl-gg-free-robux_GM431946152.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_off0000522c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x522C 25260 bytes
SHA-256: 70fc679ad4a551a7318175ef673975f0ce5e88e772df2652681422047ac1d13a
font_01_sfnt_off00008b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9563 18388 bytes
SHA-256: 3cac3a67a18aefc9018cab5069c316f318df6e005a7bd0b6256086240f829048

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