Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5d011db7bd43a3…

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 03:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 71e607dc07e6baf52b9d88b56b9a2b00 SHA-1: 21677738b530cd3221348acea0ee6f7b5f991c72 SHA-256: 1e5d011db7bd43a3501962f03b98fecb6cb8def8aa6bfb3f3ca4391124ed391f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a 'free generator / game hack' lure, specifically for Coin Master. The heuristic firings indicate that these links point to known malicious redirector infrastructure. Although no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-coins-and-spins-link-game-hack In PDF document text
    • http://axia-verlag.at/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/pubg-75-uc_GM1330123889.pdfIn PDF document text
    • http://axia-verlag.at/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://axia-verlag.at/images/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/free-op-minecraft-servers_GM479516143.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_003_off000047cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CB 24668 bytes
SHA-256: 5e090289f73d9fed9be8a1735272f9a0f901bca8f5946b252cd041334efaf647
font_01_sfnt_off0000807f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807F 18228 bytes
SHA-256: b9853edf503a53d442d3b577c09c09d59d7c57f52c57bf669c9991918f7be207

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