Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eaf44f00f64876a…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 00:53:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7eb71858de10d6af2d6997736f4a324a SHA-1: a9e8ba05caedc689268515c754497025bdb82d55 SHA-256: 2eaf44f00f64876a1b6a568e4e8649fee0261cf53ceaf00c81d1a8f3813450b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common social engineering tactic by using game-related lures to trick users into clicking malicious links. The embedded links, including the primary redirector at `https://netcdn.xyz/app/406889139/coin-master-unlimited-spins-hack-game-hack`, are designed to lead users to potentially harmful content or further malicious downloads. The presence of multiple redirector links and the ML classifier's high confidence score indicate a deliberate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-unlimited-spins-hack-game-hack In PDF document text
    • http://i-koinoxrista.gr/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spin-coin-master-2021-link_GM406889139.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_003_off00004a81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A81 25028 bytes
SHA-256: 753f63db653076caf929f26b083f3cd4b579ea72bf3bf91acc750e3a408c24c1
font_01_sfnt_off000082df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCA 18584 bytes
SHA-256: bff27dcdedd5af8a0d687a24d9b2ce7acea36a5c8901c6afee4cb29d8b6ebd85

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