Malicious PDF — malware analysis report

Static analysis result for SHA-256 e129b9e3e34c73b6…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 19:52:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 340627755ea8fd5180300903aad8dabb SHA-1: 79a9d37ad952acf9f8d51f64bd8aa25444425bde SHA-256: e129b9e3e34c73b6365a2a3887c05a9d0fde40e035df6d6627f4d3fc36917bbf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, disguised as generators for in-game currency or hacks. The document body explicitly mentions 'How To Get Free Spins On Coin Master Facebook' and includes the malicious URL, indicating a phishing or scam lure. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a high likelihood of leading to a malicious download or phishing site.

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/how-to-get-free-spins-on-coin-master-facebook-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-hack-tool-site_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-25k-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-roblox-cape_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-hack-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003154.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3154 23216 bytes
SHA-256: 8ea4b0f8601aa2424dd151ceb1cc25c7e30236cdb706d31f434ce456c5164355
font_01_sfnt_off0000658f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658F 18664 bytes
SHA-256: e014b96f3b4d84aa2f2a11dde0e83fd0357a22873c3da6238c6514ecd5ae27f1

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