Malicious PDF — malware analysis report

Static analysis result for SHA-256 730fcf740d792552…

MALICIOUS

PDF

46.1 KB Created: 2021-05-14 11:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2036c4c0001b8949b53c24ed47ca39e8 SHA-1: 687f34156880fdd7df86d8fed5cfc4616d3a3ea6 SHA-256: 730fcf740d792552512ce4837e536e65e991addc9fcdd377f76b9b3c32d276b6
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to a 'free generator / game hack' lure, aiming to deceive users. The document body and heuristics indicate a phishing attempt, likely to lead users to malicious websites or download further malware. No scripts were extracted, but the presence of multiple malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/479516143/free-minecraft-bedrock-server-hosting-24-7-game-hack In PDF document text
    • http://halle-wasserball.de/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://halle-wasserball.de/images/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://halle-wasserball.de/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://halle-wasserball.de/images/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://halle-wasserball.de/images/coin-master-link-daily-get-free-spins-and-coins_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_off00004caa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAA 24792 bytes
SHA-256: 8607a455e3a738da813da9c5ce16cdabb81ac69e213de28fe1517ee665325bfb
font_01_sfnt_off00008609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8609 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBB 18916 bytes
SHA-256: a6a992a3af0fcbb09375a58681f9855b6f4353f5ebe3ed4f439c39f2227389ef

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